Question

Medal, fan and best answer to first and best answer!!

[9.01, 9.02]Based on the graph of y = x2 − 2x − 3, what is the x coordinate of the positive x-intercept?

Answer 1

Put y = 0

Answer 2

okay

Answer 3

you will get two values of x, ignore the negative one

Answer 4

I think i'm not quite getting this, could you explain it further?

Answer 5

what do you get when you put y = 0 ??

Answer 6

0 = x^2 - 2x - 3

Answer 7

yeh, do you know how to solve ax^2 + bx + c = 0 ?

Answer 8

Nope, not off the top of my head