Question

Solve the system by graphing

-3x-y=-10.
4x-4y=8
Answers to choose from are:
A.(-1,3)
B.(3,-1)
C.(1,3)
D.(3,1)

Answer 1

-3x - y = -10
4x - 4y= 8

To make these easier to graph, convert them to slope-intercept form by isolating y on the left side:

-3x - y = -10
-y = 3x - 10
y = -3x + 10

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4x - 4y = 8
-4y = -4x + 8
y = x - 2

Now I can graph the equations

y = -3x + 10
y = x - 2

Answer:
D. (3, 1)