What is the correct answer?

Question

A quadratic function has zeros located at 3.5 and -2. Which of the following best represents the

equation of this quadratic function?

A. y = (x + 3.5)(x − 2)

B. y = x²+1.5x–7

C. y = x²–1.5x

D. y = (x + 3.5)(x + 2)

Answer 1

Hello, Jalixa

So if the zeroes are 3.5 and -2, then

y = (x - 3.5)(x+2)

because, if you substitute 3.5 for x or -2 for x into the equation, you get zero.

If you multiply it out you get:

y = (x-3.5)(x+2)

y = x² -3.5x + 2x -7

y = x² -1.5x - 7

This is not one of your options, unless answer C should read y = x² -1.5x -7