Solve the system of equations.

x + y + z = 9
-2x +y+2z =3
x - 4y - z = 2

x = 4  , y = − 1  , z = 6

Step-by-step explanation: m.athway

sine

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