Question 491623
y = mx + b 
y = -7/10*x + b
.
When x = -2, y = -1, which we use to find b.
.
-1 = -7/10*-2 + b
-1 = 14/10 + b
-10 = 14 + 10b
10b = -24
b = -24/10
.
y = -7/10*x -24/10
.
{{{graph(500,500,-5,5,-5,5,-7/10*x-24/10)}}}