DIRECT AND INVERSE VARIATIONS

What letter is used to represent the "constant" in an equation of variation?

(a)  

It is a kind of variation wherein both quantity decreases or increases at the same time.

• Direct Variation

• Inverse Variation

• Joint Variation

• Combined Variation

If y varies directly as x, how would you write it as an equation of variation?

(a)  

Which of the following is the first step in solving variations?

• Express the statement into variation statement.

• Substitute the first set of values to find the constant.

• Substitute the constant and the second set of values.

If a varies directly as b, which of the following is the correct translation?

• a = kb

• b = ka

• k = ab

If y varies inversely as x and y = 7 when x = 9, what is the value of k?

(a)  

If y varies inversely as x and y = 3 when x = 8, what is y when x = 6?

• 4

• 6

• 8

• 24

m varies directly as p and m = 9 when p = 3. What is m when p = 7?

• 3

• 15

• 21

• 30

Find the value of the constant. Suppose y is inversely proportional to x and y = 4 when x = 8.

(a)  

If x is directly proportional to y, and x = 32 when y = 16, what is x when y = 9?

• 16

• 32

• 2

• 18