Question

Please help will medal and fan

Answer 1

With?

Answer 2

@AloneS do you know how to do this?

Answer 3

Awh gurl, the file isn’t loading for me ;-;

Answer 4

it has a graph in it idk how else to upload it for you Im sorry

Answer 5

@amorfide can you help me?

Answer 6

standard form of a quadratic
ax^2 +bx + c
c is the y intercept
so the y intercept is -4
hence c=-4
ax^2 + bx -4
now the roots of the quadratic is when y=0, so that is when it intercepts the x axis
it intercepts at the point 2, but also the point -2
s0 we have x=2, x=-2
so we want to rearrange that to get ax+B=0
x=2, so x-2=0
x=-2, so x+2=0

since these are roots of the equation we write it in factorised form
(x-2)(x+2)=0
we can check this by multiplying out
(x-2)(x+2)=0
x^2 +2x -2x -4=0
x^2-4=0
x^2=2
x=2, or x=-2, by the square root of both sides
which is exactly what we have the graph of!