Question

Find the x-intercepts for the parabola defined by the equation below.

y = x2 - 9x + 18

Answer 1

x intercpts are found by setting y = 0 and solve.

basically factor the right side
can you do that?

Answer 2

Factor what ?

Answer 3

this is like the last one, factor the right side of the equation so that when both terms are multiplied together they get the same thing.

Answer 4

http://www.purplemath.com/modules/solvquad.htm

Answer 5

especially look at this and try it: http://www.purplemath.com/modules/factquad.htm

Answer 6

x^2 - 9x + 18 = (x )(x )

Answer 7

You want two numbers that multiply to get 18, and add to get -9

Answer 8

Oh Okay .

Answer 9

Got It , Thannks

Answer 10

np! so what do you get though?

Answer 11

So Would Get (0, 3) and (0, 6) ?

Answer 12

close!

Answer 13

Where Did I Go Wrong ?

Answer 14

x^2 - 9x + 18 = (x - 6 )(x - 3 ), and the rest you did right! except - you mixed up your coordinates when you translated into the answer =)

Answer 15

(3,0) and (6,0), not the reverse :p

Answer 16

but great work, you did the math part right =)

Answer 17

Lol Okay !