8th Grade Semester 1 Exam Review Version 2

Front

What does it mean for a graph to be increasing?

Back

A graph is increasing if, as you move from left to right, the y-values rise.

Front

What is a function in mathematics?

Back

A function is a relation where each input (x-value) has exactly one output (y-value).

Front

Solve for x: 2(4x-3) - 8 = 4 + 2x

Back

x = 3

Front

What does it mean for a graph to be decreasing?

Back

A graph is decreasing if, as you move from left to right, the y-values fall.

Front

Solve for x: -3x - 4(4x-8) = 3(-8x-1)

Back

x = -7

Front

What is the slope-intercept form of a linear equation?

Back

The slope-intercept form is given by y = mx + b, where m is the slope and b is the y-intercept.

Front

What is the y-intercept of the equation y = x + 200?

Back

The y-intercept is 200, which is the value of y when x = 0.

Front

How do you determine if a set of values is a function?

Back

Check if any x-value is repeated; if not, it is a function.

Front

What does it mean for a graph to be constant?

Back

A graph is constant if the y-values do not change as x changes, resulting in a horizontal line.

Front

Solve for x: 3x + 5 = 20

Back

x = 5.