Question

The equations X-2Y=1, 3x-y=-1, x+2y=-1, and 3x+y=1 are shown on the graph below.

Which system of equations has a solution of approximately (0.6, –0.8)?
A. x+2y=-1 and 3x+y=1
B. x-2y=1 and 3x+y=1
C. x-2y=1 and 3x-y=-1
D. x+2y=-1 and 3x-y=-1

Answer 1

Answer:

When you graph all the equations into a graphing calculator, you find the answer is:

C. x-2y=1 and 3x-y=-1

Answer 2

Answer:

A

Step-by-step explanation:

The green line represents  x+2y=-1 and the purple line represents 3x+y=1.  These lines intersect at (0.6, -.08) That means that this system has a solution of  (0.6, -.08).