Which is the quadratic variation equation for the relationship?

y varies directly with x2 and y = 72 when x = 6.

A. y = 12x

B. y = 4x2

C. y = x2 + 25

D. y = 2x2

Question

Harley Ortiz

Mathematics

6 April, 21:08

Which is the quadratic variation equation for the relationship?

y varies directly with x2 and y = 72 when x = 6.

A. y = 12x

B. y = 4x2

C. y = x2 + 25

D. y = 2x2

+4

Answers (1)

Know the Answer?

Sonia Weiss · Answer 1

We are asked to find the expression that is expressed as y varies directly with x^2.

y α x²

To convert it to equality,

y = kx²

We find the value of k by using the given values,

72 = k (6) ²

k = 2

Therefore, the correct answer is option D, y=2x².

Which is the quadratic variation equation for the relationship?y varies directly with x2 and y = 72 when x = 6.A. y = 12xB. y = 4x2C. y = x2 + 25D. y = 2x2

Which is the quadratic variation equation for the relationship?

y varies directly with x2 and y = 72 when x = 6.

A. y = 12x

B. y = 4x2

C. y = x2 + 25

D. y = 2x2