Question

Which equation is a quadratic equation?

y + 3 = 5x + 10

y + 4x2 = (4x − 2)(x + 3)

y − 8x = (x2 + 1)(9x − 7)

y = 2x + 7x(x + 1)

Answer 1

none of them

Answer 2

it has to be one of them...

Answer 3

A quadratic equation is when you get a parabola if graphed. Make sure your equations are in the form of y=mx+b

Answer 4

actually if it is so then the last one

Answer 5

hmm ok..then why did you say b at first..?

Answer 6

i made mistake while reading question

Answer 7

oh ok