Question

these damb porabolas got me stumped, what is the equation for a parabola when the x ints are 4 and -4 and goes through the point (2,-20)

Answer 1

ive gotten up to -20=-6a

Answer 2

the ints are 4 and -3

Answer 3

not -4 and 4

Answer 4

If it crosses the x axis at 4 and -3 then it must have factors (x-4)(x+3)
So we can write y = a(x-4)(x+3)
Then replace x with 2 and y with -20 and find a

Answer 5

so 20 with a okay i put -20 as y

Answer 6

mertsj r u sure you put -20 in a

Answer 7

Then replace x with 2 and y with -20 and find a
REPLACE X WITH 2
REPLACE Y WITH -20

Answer 8

thanks man got it
i was adding the -2 and +5 not multiplying