Math9_Q2_A

What two quantities increase at the same time or decrease at the same time?

• Direct Variation

• Joint Variation

• Inverse Variation

• Combined Variation

A variation that shows that one quantity is increasing while the other is decreasing.

• Direct Variation

• Joint Variation

• Inverse Variation

• Combined Variation

What is the formula for the Joint Variation?

What is the formula for the Combined Variation?

The fare F of a passenger varies directly as the distance d of his destination. What is the equation of this variation?

The number of pizza slices p varies inversely as the number of persons n sharing a whole pizza. What is the equation of this variation?

The value of the constant has already been identified, what is the next thing to do?

• Find the equation

• Solve for what is asked

• Find the value of k

• The constant is the final answer

If y varies directly as x and y = 24 when x = 6, find y when x = 2.

• 2

• 6

• 8

• 12

If y varies inversely as x and y = 3 when x = 4, find y when x = 6.

• 2

• 6

• 9

• 12

If z varies jointly as x and y and z = 60 when x = 5 and y = 6, find z when x = 3 and y = 1.

• 3

• 6

• 9

• 12