Proportional/Non-Proportional Relationships

The equation y = -9x is proportional?

• True

• False

Is the following graph proportional?

• Yes

• No

Check ALL the equations that show a proportional relationship.

• y = 25x

• y = -4x

• y = 25x + 10

• y = .75x

Which of the following is NOT a true statement about proportional graphs.

• A proportional graph will pass through the origin.

• A proportional graph will be a straight line.

• A proportional graph will have a constant rate of change.

• A proportional graph will be curved

Select the equation that is non-proportional and has a positive y-intercept.

• y = -10x

• y = 7x + 1

• y = 2.5x - 7

This graph has what type of slope?

• Negative

• Positive

• Zero

• Undefined

What is the equation of this line?

• y = 1/2x

• y = x + 4

What is the slope of a line with coordinates (2, 4) & (1, 7)?

• 1/3

• -3

• 3/5

What is the rate of change?

• 16

• 2

• 8

• The equation is proportional.

• The equation has a positive slope.

• The equation has a positive y-intercept.

• The equation has a negative y-intercept.