answersLogoWhite

0


Best Answer

Well, when a parabola is in the form y=ax^2+bx+c, we know that c is the y-intercept.

So all we need to do with this equation is expand it into that form.

y = (x-1)(x+3)

Expand

y = x^2-1x+3x-3

Collect like terms

y = x^2+2x-3

And there you have it. Your y-intercept is -3.

User Avatar

Wiki User

14y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Y intercept of parabola- y equals x minus1 x plus 3?
Write your answer...
Submit
Still have questions?
magnify glass
imp