2025 MP3 Test Review

Front

What is the equation of a line in slope-intercept form?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

What does a positive slope indicate about a graph?

Back

A positive slope indicates that as x increases, y also increases.

Front

What does a negative slope indicate about a graph?

Back

A negative slope indicates that as x increases, y decreases.

Front

What does a zero slope indicate about a graph?

Back

A zero slope indicates that the line is horizontal and y does not change as x changes.

Front

What is the meaning of 'undefined slope'?

Back

An undefined slope occurs in a vertical line where x does not change as y changes.

Front

How do you determine the slope from a graph?

Back

The slope is determined by the rise over run, or the change in y divided by the change in x.

Front

What is the y-intercept in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis (x=0).

Front

How do you write an equation for a linear relationship?

Back

Identify the slope and y-intercept, then use the slope-intercept form y = mx + b.

Front

What does it mean if a graph has no trend?

Back

It means there is no clear relationship between x and y; the points are scattered.

Front

In the equation y = 0.75x + 35, what does 35 represent?

Back

35 represents the fixed cost or y-intercept when x (miles driven) is 0.