Question

Which equation has a constant proportionality equal to 10?

CHOOSE 1 ANSWER

A: y=2/20x
B: y= 30/3x
C: y=12/2x
D: y=5/5x

Answer 1

The answer is B. Y= 30/3x

Answer 2

B:
`y = (30)/(3)x`

Explanation:

Hello!

The constant of proportionalities are listed in the fractions. We can simplify all the fractions to see which one equals 10.

• A:
  `(2)/(20) = (1)/(10)`
• B:
  `(30)/(3) = (10)/(1) = 10`
• C:
  `(12)/(2) = (6)/(1) = 6`
• D:
  `\frac55 = 1`

The correct answer is option B.