Solve using substitution.
x-y=4
3x-2y=-5

x-y=4 => x=4+y

replace that in 2nd equation

3(4+y) -2y = - 5

12+3y-2y= -5

y = -17

x = 4+(-17) =  -13

Step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4