Direct Variation Quiz

What is the formula used to represent direct variation?

• Y = K - X

• Y = K + X

• Y = KX

• Y = X/K

In a direct variation, if one variable increases, what happens to the other variable?

• It becomes zero

• It also increases

• It remains constant

• It decreases

What is a key characteristic of a graph representing direct variation?

• It is a vertical line

• It passes through the origin

• It is a curved line

• It is a horizontal line

How do you find the constant of variation in the equation Y = KX?

• Subtract X from Y

• Multiply Y by X

• Add Y and X

• Divide Y by X

If Y = 12 and X = 4 in a direct variation, what is the constant of variation?

• 6

• 4

• 2

• 3

What is the equation of variation if the constant of variation is 3?

• Y = 3 + X

• Y = 3X

• Y = X/3

• Y = 3 - X

In the problem where Y = 36, what is the value of X if the constant of variation is 3?

• 9

• 12

• 15

• 18

In the second example, if Y = 6 and X = 3, what is the constant of variation?

• 1

• 2

• 3

• 4

What is the value of Y when X = 9 and the constant of variation is 2?

• 18

• 20

• 22

• 16

If the constant of variation is 2, what is the equation of variation?

• Y = X/2

• Y = 2 - X

• Y = 2X

• Y = 2 + X