Understanding functions

What type of variation is represented on the graph?

• Direct

• Inverse

• Neither

Does this equation show direct variation?

y = 14x

• Yes

• No

What type of variation is represented by the graph?

• direct

• inverse

• neither

Which is an example of direct variation?

• xy = 10

• y = 5x

Which equation below represents a direct variation?

• y = -2x
• y = -3x -5
• y = -1
• x + 3y = 15

In direct variation, an increase in x causes an _______ in y.

• increase

• decrease

5 men can do a repairing work in 6 days. how many men will do in 4 days?

• Direct variation

• Inverse variation

• None

Height and age of a person

• Direct variation

• Inverse variation

• None

The equation 
xy =  25  represents:

• direct variation

• inverse variation

• none of these

Determine if the following equation represents direct variation.

y = 3x + 4

• Direct Variation

• Not a Direct Variation