12/17: Common Assessment - Slope (8th Grade)

Front

What is the formula to calculate the slope of a line between two points (x1, y1) and (x2, y2)?

Back

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

Front

Find the slope of the line that passes through the points (6, 7) and (3, 2).

Back

5/3

Front

Find the slope of the line represented in the table with points (x1, y1) and (x2, y2) where y decreases as x increases.

Back

-3/4 or 3/-4

Front

Find the slope of the line that passes through the points (4, 9) and (7, 11).

Back

2/3 or +2/3

Front

What does a positive slope indicate about a line?

Back

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

Front

What does a negative slope indicate about a line?

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

If the slope of a line is 3, what does this mean in terms of rise over run?

Back

For every 3 units the line rises, it runs 1 unit to the right.

Front

How do you interpret a slope of -1/2?

Back

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