Quiz 1 - Math Models

• Direct

• Inverse

• neither

xy=40

• direct

• inverse

• neither

8x-2y=2

• Direct

• Inverse

• Neither

• Direct

• Inverse

• Neither

If y varies directly as x, and the constant of variation is -3, which equation represents this relationship?

• y=-3x

• y=3x

If the point (2, -10) lies on the graph of an inverse variation, which represents the inverse variation equation?

• y=-20x

• y=-5x

If the point (12, 4) lies on the graph of a direct variation, what is the constant of variation?

• 8

• 3

• 48

Identify two ordered pairs below that would form a direct variation.

• (2,8)

• (20,5)

• (10,10)

• (2,18)

• (12,3)

What variation (if any) is represented in the table shown?

• Direct

• Inverse

• Neither

What variation (if any) is represented in the table?

• Direct

• Inverse

• Neither