Question

vertex is (8,-3) also passes through (9,1) whats that in vertex form?

Answer 1

you can use vertex form

y=a(x-h)+k

(h,k) is the vertex

you can plug in a point for (x,y) and solve for a, then you'll have all parts of the equation =D

so plugging in
1=a(9-8)-3

can you solve for a?

Answer 2

1=1a-3?

Answer 3

oopsy, i forgot the square, it'll still give us the same result in this case but want you to learn it right.

its y=a(x-h)^2+k

so we get

1=a(9-8)^2-3
1=1a-3
4=a

just tack that into the equation a long with the vertex and you've got your answer

y=4(x-8)^2-3

Answer 4

So if im right that's the answer?

Answer 5

yes that is the answer.

Answer 6

thanks do you have time for another question?

Answer 7

sure

Answer 8

Your axis is x=6 and your maximum height is 8 and the line passes through 7,5

Answer 9

I need standard form

Answer 10

is that what the question says

Answer 11

yes

Answer 12

my bad vertex form!

Answer 13

axis of symmetry x=6?

Answer 14

Are ya still here?

Answer 15

yes

Answer 16

ok well if I'm interpreting the question right, its an axis of symmetry.

the problem basically gave you a vertex and a point like the last one because the axis of symmetry is the x value of the vertex, and the maximum value is the y value of the vertex.

so we have a vertex of (6,8) and a point at (7,5)

now its just like the last problem but with different numbers, can you start it off?

Answer 17

help please

Answer 18

5=a(7-6)^2+8

solve for a.

Answer 19

7/