Slope and Constant of Proportionality REVIEW

Front

What is the slope of a line that rises from left to right?

Back

Positive

Front

What is the slope of a line that falls from left to right?

Back

Negative

Front

What is the slope of a horizontal line?

Back

Zero

Front

What is the slope of a vertical line?

Back

Undefined

Front

How do you calculate the slope between two points (x1, y1) and (x2, y2)?

Back

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

Front

What does the constant of proportionality represent in a proportional relationship?

Back

It represents the ratio between two quantities that are directly proportional.

Front

If y = kx, what does k represent?

Back

The constant of proportionality.

Front

What is the constant of proportionality for the table: (1, 3), (2, 6), (3, 9)?

Back

3

Front

What is the formula for finding the slope from a graph?

Back

Rise over run.

Front

What does a slope of 3/7 indicate about the line?

Back

For every 7 units moved horizontally, the line rises 3 units.