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You know how to find the equation of f(x)?

Not really sorry... Is it m = y2 - y2 over x2 - x1 ?

What do you mean when you say two points?

Value of f(x) is your y

so you have 3 points of the line here (-1,-5) , (0,-1) ,(1,3)

yes

OK give me a min

you plug in the numbers into the formula for gradient

just choose any 2

Well I got one that is 0 - (-1) over -1 - (-5) that equals 4 would that be my slope?

yea so the line equation we have now is
\[f(x) = 4x+c\]

now we can find the value of c by replace the value of f(x) and x

Oh ok thank you so much for your help do you need anything?

you got your answer?

Almost

c is the y-intercept of the line

It's given to you actually, look at x = 0 f(x) = -1

Because:
\[4(0)+c=-1\]

ok ok

I get it sorry I was stuck you need anything?

Nah not really.

Well thanks for all the help!

You're welcome