Question

How many solutions does this linear system have?
y = 2x-5
-8x – 4y=-20

Answer 1

B: one solution: (2.5, 0)

Explanation:

I got it right on Edge

Answer 2

Answer: one solution (5/2,0)

Explanation:

y = 2x-5

-8x – 4y=-20

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-8x-4(2x-5)= -20

-8x-8x+20= -20

-16x=-20-20

-16x=-40

16x=40

x=40/16

x=10/4

x=5/2

y=2*5/2-5

y=5-5

y=0