First find slope with slope formula and your two points .
(-1,4) and (-4,2)
M=y2-y1/x2-x1
M=2-4/-4-(-1)
M=-2/-3
M= 2/3
Now substitute your slope and one of the points to equation on the line formula to find b.
Y=mx+B and using m=2/3 and (-1,4).
Y=mx+b
4=2/3(-1)+B
4= - 2/3+b
4+ 2/3=B
14/2=B
So now put your answers slope and b to make equation.
Y= 2/3x +14/2
