Question

What would the equation for this be?

x | f(x)
-- | ----
-3 | -19
-1 | -11
1 | -3
3 | 5
5 | 13

Answer 1

y values increasing by 8

Answer 2

I know that, I just don't know what the equation is.

Answer 3

f(x) = mx + b

use the rate of change to find the slope m

Answer 4

x increases with 2
y with 8
so m =

Answer 5

then jot in one of the points
for example y = -3 and x =1

Answer 6

y = 4x - 7

Answer 7

that's right

Answer 8

you medal me i medal you, it doenst matter

Answer 9

it's handy to check it with another point, so that you make sure you've got it right
for ezample y = -11 and x = -1

Answer 10

Thank you!!