25 Words for 8th Grade

Question 1

Arithmetic Sequence

Answer 1

A sequence which has a constant difference between terms.

Question 2

Box plot

Answer 2

A diagram that shows the five number summary of a distribution.

Question 3

Constant rate of change

Answer 3

The slope of a graph of an equation.

Question 4

Constant term

Answer 4

A term whose value does not change.

Question 5

Corresponding side

Answer 5

The relative position of two sides is the same on two figures.

Question 6

Domain

Answer 6

The set of “input” values for which a function is defined.

Question 7

Elimination

Answer 7

Adding or subtracting a system of equations to eliminate a variable.

Question 8

Function

Answer 8

A relation that assigns exactly one value in the range to each value in the domain.

Question 9

Function notation

Answer 9

To write an equation with f(x) in place of y.

Question 10

Geometric sequence

Answer 10

A sequence which has a constant ratio between terms.

Question 11

Histogram

Answer 11

A bar graph in which the labels for the bars are numerical intervals.

Question 12

Interquartile range

Answer 12

The difference between the upper quartile and the lower quartile.

Question 13

Intersection

Answer 13

A point where two or more functions cross.

Question 14

Linear equation

Answer 14

An algebraic equation in which each term is either a constant or the product of a constant and (the first power of) a single variable.

Question 15

Parallel lines

Answer 15

Lines that have the same slope.

Question 16

Perpendicular lines

Answer 16

Lines where the product of their slopes is -1

Question 17

Pythagorean Theorem

Answer 17

In any right triangle, the sum of the squares of the lengths of the legs (a and b) is equal to the square of the length of the hypotenuse (c).

Question 18

Range

Answer 18

The set of “output” values for which a function is defined.

Question 19

Rate of change

Answer 19

The ratio of the change in the output and the change in the input values of a function.

Question 20

Scatter plot

Answer 20

A graphic tool used to display the relationship between two quantitative (numerical) variables.

Question 21

Slope

Answer 21

Describes steepness, incline, or grade of a line.

Question 22

solution

Answer 22

Any and all value(s) of the variable(s) which; satisfies an equation, or inequality.

Question 23

System of equations

Answer 23

two or more equations with the same variables, graphed on the same coordinate plane

Question 24

Term

Answer 24

A mathematical expression which may form a separable part of an equation, a series , or another expression.

Question 25

Vary

Answer 25

Change; differ