What is the equation?

y=-2+4

Step-by-step explanation:

we know the y intercept is four, so we can plug that into y=mx+b

so far we know y=mx+4

and the equation for finding slope is

so let's find two points on the graph

let's make it easy on ourselves and use the points laid out for us

(0,4) and (2,0)

solving that would come out to be

simplified, that would be -2

now that we know the slope, we can put them into slope-intercept form

y=-2+4

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.