Math 8: Lesson 3.3-3.4 Review

Front

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

Back

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

Front

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

Back

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

Front

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

Back

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

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is 0.

Front

What is the slope of a vertical line?

Back

The slope of a vertical line is undefined.

Front

How do you determine which line has the steepest slope?

Back

Compare the absolute values of the slopes; the line with the largest absolute value is the steepest.

Front

If a line has a slope of 2, what does this mean in terms of rise over run?

Back

For every 2 units the line rises, it runs 1 unit to the right.

Front

What is the slope of the line that passes through the points (1, 2) and (1, 5)?

Back

The slope is undefined because the x-coordinates are the same.

Front

If a line has a slope of -3, what does this indicate about the direction of the line?

Back

The line descends from left to right.

Front

What is the significance of a slope of 1/2?

Back

For every 1 unit the line rises, it runs 2 units to the right.