UNIT 1-3 REVIEW

Front

What is the result of -42 - (-12)?

Back

-30

Front

What is the Y-INTERCEPT in the equation y = mx + b?

Back

The Y-INTERCEPT is the value of y when x = 0.

Front

What is the y-intercept of the graph if it crosses the y-axis at 4?

Back

4

Front

In the equation y = 2x + 6, what does the 6 represent?

Back

The y-intercept.

Front

In the equation y = -3x + 1, what does the 1 represent?

Back

The y-intercept.

Front

What is the slope in the equation y = mx + b?

Back

The slope (m) represents the rate of change of y with respect to x.

Front

How do you find the y-intercept from an equation in slope-intercept form?

Back

Set x = 0 and solve for y.

Front

What does a negative slope indicate about a line on a graph?

Back

It indicates that as x increases, y decreases.

Front

What is the formula for calculating the slope between two points (x1, y1) and (x2, y2)?

Back

Slope = (y2 - y1) / (x2 - x1).

Front

What is the significance of the y-intercept in a real-world context?

Back

It often represents the starting value of a situation when the independent variable is zero.