Question

(-3, -9), (-2, -7), (0, -3), (, -1), (1, 5) is this a function?

Answer 1

It looks like a bunch of point in the cartesian plane of the form (x,y) which can be used to create a line equation (or a line function)

Explanation:

we can start by first finding the slope by using the formula

`y2-y1/x2-x1` =
`-7-(-9)/-2-(-3)=2/1=2`

so now we have our slope m=2

Now we also have the y-intercept which is (0,-3) (y-intercept is the value of y when x=0)

using the equation
`y=mx+c` where m is the slope and c is the y-intercept,

we arrive at y=2x-3 (or)

f(x)=2x-3