Unit One exam #1

Variable Expression

An expression that consists of numbers, variables, and an operation. 2x+3

Base of a Power

base The number or expression that is used as a factor in a repeated multiplication. So the 5 is the base.

term

The part of an expression that are added together. 2x+6 So the terms in the above expressions are (2x) and (6).

Expanded Form

appropriate

The correct or proper use for something.

Operation

In math operation refers to the action in a math sentence or problem. So 2x++ In the variable expression 2x+4 the operation is to add.

Like Terms

In an variable expression 2x+3x+4x-2n, we see a common variable x, so (2x+3x+4x) are like terms.

Commutative Property

a+b+c=c+b+a 1+2+3=2+3+1 axbxc=cxbxa 1x2x3=2x3x1

Associative Property

Grouping does not matter

Distributive Property

a(b+c) = axb+axc 2(3+4) = 2x3+2x4

Identity property of Addition

What number plus a number is the same number? Or what plus eight is eight? 8+0= =-15 2/3+0=2/ =5.76 C+0=c

Identity property of Multiplication

Identity Property of Multiplication What number TIMES a number is the same number? Or what TIMES eight is eight? 8x1=8 -15x1=-15 2/3x1=2/3 cx1= c

Inverse Property of Multiplication Multiplicative Inverse

Inverse Property of Multiplication Inverse,

Inverse Property of addition

If you start with eight and add the invers the opposite you get zero. 8+-8=0 1/2 + -1/2 = 0

Coefficient

4x+3 The 4 is the coefficient

Constant

2x+3 The 3 is the constant

Variable

2x+3 The x is the variable

Like Terms

4x and 3x Both terms have an x so they are like terms.

Addition

Sumar To add Plus The sum of Increased by Total More than Added to Sum Altogether More than Increased

Subtraction

Menos Minus The difference of Decreased by Fewer than Less than Subtracted from Difference Less-than Take away Decreased compare

Multiplication

Multiplicar Times the product of Multiplied by Of Product a(b) Times Groups of

Division

Dividid Divided by The quotient of Into Equally Equal groups Quotient 3/a

Power

A power is a way of writing repeated multiplication.

Base

Power The base of a power is the factor, and the exponent of a power is the number of times the factor is used.

Unit Rate

Rate is a ratio of two quantities measured in different units. You are looking for the cost of one. So if you buy 6 sodas for $7.50, you will see that the cost is $1.25. To find the answer you divide 7.50 by 6.

Ratio

A ratio is a comparison of two numbers using division. a b 1:2 1to2 comparacion entre dos numeros usando la division. La razon de la “A” a “B” (donde “B# 0) puede escribirse como”A” a “B”, c omo A:B

Proportion

A proportion is an equation stating that two ratios are equivalent. 1 = 4 2 8

Simple Interest

I=prt I = interest P= principal amount (how much you borrow) r= rate (percent) t= time ( in years)

Q-3 Test #1

Histogram

A graph that displays data from a frequency table. The histogram has one bar for each interval. The length indicates the frequency. 1-10; 11-20; una grafica que muestra datos de una tabla de frecuencias. Un histrograma tiene una barra para cada intervalo de la tabla que contiene valores de datos. La longitud de la barra indica la frecuencia para intervalo.

Bar Graph

The lengths of the bars are used to compare data. Un tipo de grafica en el que las longitudes de las barras se usan para representar y comparar datos.

Circle

A graph that displays data as sections in a circle. The total represents all of the data as 100%. El conjunto de todos los puntos en un plano que estan en la misma distancia, llamada radio, de un punto fijo, llamado centro.

Box and Whiskers

Used to look at mean, medium, and mode. Diagrama que divide un conjunto de datos en cuatro partes usando el extremo inferior, el cuartil Inferior, el cuartil superior y el extremo superior.

Stem-and-Leaf Plot

In order from least to greatest, this is used to show how data values are distributed. The last digit is in the leaf section and the remaining digits are in the stem. Diagrama que muestra como se distribuyen los valores de un conjunto de datos cada valor esta separado en una hoja (el ultimo digito) y un tallo (los digitos restantes). En un diagrama de tallo y hojas ordenada, las hojas para cada tallo estan en orden de menor a mayor.

Line Graph

Line graphs display change over time. Un tipo de grafica en la que los puntos que representan pares de datos se conectan por segmentos de recta.

Qualitative -how it smells -how it looks - The colors its green Quantitative - the things you count - how much - how many -one car

Scatter Plots

How two thins are correlated.(or connected) Are used to predict what might happen in the future. La grafica de un conjunto de pares de datos (x,y), que es un grupo de puntos en un plano de coordenadas.

Correlation

Correlation: How two things are connected.

Trend Line

A Trend line show and predicts what can happen in the future. They are positive negative or none. Trend Line: a line that divides the dots. When you are talking about trends as líneas de tendencia se usan normalmente con los gráficos de precios, sin embargo, también se puede utilizar con una serie de gráficos de análisis técnicos tales como MACD y RSI. Las líneas de tendencia se puede utilizar para identificar gráficos de tendencias positivas y negativas, por lo que un gráfico de tendencia positiva forma una línea upsloping cuando el soporte y los puntos de resistencia pivotes están alineados, y un gráfico de tendencia negativa forma una línea de pendiente descendente cuando los puntos de pivote de soporte y resistencia son alineados.

Mean

Mean The average Take the numbers 1,2,3 and add them then divide by the number of inputs. So 6 divide by 3 equals 2 The average is 2 la suma de los valores en conjunto de datos dividida por el numero de valores.

Median

The Middle number (1,2,3,4,5,6,7,8,9) el valor que esta en el medio de un conjunto de datos cuando los valores estan escritos en orden numerico. Si el conjunto de datos tiene un numero par de valores, la mediana es la media de los dos valores que estan en el medio.

Mode

The number that appears the most. (2,3,4,4,4,5,6,7) The mode is 4 En conjunto de datos, el valor que ocurre con mayor frecuencia. Un conjunto de datos puede no tener moda,o puede tener una moda o mas de una moda.

Congruent

Having the same shape and size Shape has the same size lengths

Similar

Same shape different size

Square Number

Numbers that are squares of integers A number that when placed in an array can be sorted into a square

Square Root

Square Roots A square root of a number n is a number m which, when multiplied by itself, equals n. So the square root of 9 equals 3 because 3x3= 9

Y=mx+b

Standard y-intercept formula

Slope Formula

Slope formula (x,y) 1’s 2’s

Complementary angles

Angles that add up to 90 degrees

Next Unit

Acute Angle

Acute Angle angles that measure between 1-89 degrees

Obtuse Angle

Obtuse Angle Angles that measure between degrees

Right angle

Right angle an angle that measures 90 degrees

Straight angle

Straight angle an angle measures 180 degrees

Complement Angles

Complement Angles are two angle that measure exactly 90 Degrees

Supplementary angles

Supplementary angles are two angle that measure exactly 180 degrees

Line Segment

Line segment: is a part of a line. Line Segment

Congruent Line Segment

Congruent Lines segments: are two or more lines with the same measurement.

Congruent Angles

Congruent Angles: two or more angles with the exact measure in degrees.

Angle Bisector

Angle Bisector is a line that divides an angle into two parts.

Parallel Lines

Parallel Lines: two lines that never intercept or touch.

Perpendicular Lines

Perpendicular Lines: two lines that intersect at exactly 90 degrees.

Transversal

Transversal a line that intersects two parallel lines.

Corresponding angle Angles

Corresponding Angles Angles that share the same line so angles 1,3 5,7 2,4 6,8

Vertical Angles

Vertical Angles; are angle catty corner of across from each other. 1,4 3,2 5,8 7,8

Adjacent angle Adjacent angle are two angles that share wall. 1,3 5,6 2,4

Chords

Chords are any lines passing through a circle, they may not be the exact middle.

Skew Lines

Memorize 5, 2, 7, 4 are the same 1, 6, 3, 8 are the same

CRT

Commutative Property

commutative property = c+b+n = n+c+b

Associative Property

(1+2)+3+(4+5) = 1+2+(3+4)+5

Distributive Property 3(5+s) = 3x5 + 3xS