Question 338966
(-4,1) slope 3 :
 y= mx +b.: 
1=3*(-4)+b: 
b=13: 
y=3x+13
...
slope -3
1=-3*(-4)+b
b=-11
y=-3x-11
...
1=1/2*-4+b
b=3
y= 1/2 x +3

y=1
{{{graph(500,500,-15,15,-15,15,3x+13,3x-11,(1/2)x+3,y=5)}}}