Inverse and Direct Variation Quiz

What is the relationship between variables in inverse variation?

• y = kx

• y = x - k

• y = x + k

• y = k/x

In direct variation, what happens to y as x increases?

• y becomes zero

• y remains constant

• y decreases

• y increases

If y = 3/x, what type of variation is this?

• Inverse variation

• Direct variation

• Neither

• Both

How do you determine the constant of variation in a direct variation table?

• Multiply x and y

• Divide y by x

• Subtract x from y

• Add x and y

What is the equation form for direct variation?

• y = k/x

• y = x + k

• y = x - k

• y = kx

In an inverse variation, if y = -5 and x = 6, what is the constant of variation?

• -30

• 30

• -1

• 1

What is the equation for an inverse variation if the constant of variation is -30?

• y = x/-30

• y = -30x

• y = 30/x

• y = -30/x

If y = -3x, what is the constant of variation?

• -1

• 1

• -3

• 3

In a direct variation problem, if y = -6 and x = 2, what is the equation relating x and y?

• y = 6x

• y = -6x

• y = 3x

• y = -3x

What is the value of y when x = 4 in the equation y = -3x?

• -3

• 12

• 3

• -12