Direct vs Inverse Proportion

Which equation exhibits a direct proportion?

• y = 5x - 2

• y = 3/4 x

• y - x = 4

• x = 6

Is this a direct proportion?

y=2x

• yes

• no

Which statement best describes an inverse proportion relationship between y and x?

• y increases then x will decrease

• y increases then x will increase

• y increases then x will remain the same

• y decreases then x will decrease

6 men can paint a building in 15 days. Find the number of days taken for 5 men to paint the same building.

• 10

• 14

• 18

• 22

• Direct

• Inverse

• niether

Determine the type of variation:

• Direct

• Inverse

• Neither

Tags

TEKS.MATH.8.5E

What type of proportion does the table represent?

• Direct

• Inverse

• I dont' know

Write a direct proportion equation.

• R=3/4t

• R=4/3t

Y is directly proportional to the square of z and inversely proportional to w.

• y=kz²/w

• y=kz/w

• y=w/kz²

• y=w/kz

Write a direct proportion equation for the graph

• y=2x

• y=24x

• y=4x

• y=16x