8th Grade Math Vocabulary

a mathematical phrase that combines numbers and/or variables using mathematical operations

product of repeated factors

the longest side of a right triangle (side across from the right angle)

find an answer to a problem

how steep a straight line is (rise/run)

point where a line crosses the y-axis

a symbol (usually a letter) used to represent an unknown number

tells how many times a number is to be multiplied by itself

input (x-values)

point where a line crosses the x-axis

rule which operates on an input and produces an output

the two shorter sides of a right triangle

two lines that intersect at a right angle (slopes are opposite reciprocals)

multiplying a number by a group of numbers is the same as doing each multiplication separately

output (y-values)

tells what number is being multiplied by itself

two lines that never intersect because they have the same slope

a statement that two expressions are equal

to find the value of an expression

in a right triangle the sum of the squares of the legs is equal to the square of the hypotenuse