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Solve this system of equations using the substitution method.

y=-2x+9
8x-3=y

( ? , )

User Jamie Brunton
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1 Answer

14 votes
14 votes

Answer:

x = 1.2

y = 6.6

Explanation:

1) y= -2x+9

2) 8x-3=y

Substitute y in equation 1 using y in equation 2.

8x - 3 = -2x + 9

+ 3 on both sides

8x = -2x + 12

+ 2x on both sides

10x = 12

x = 1.2

To find y, plug in x

8x - 3 = y

9.6 - 3 = y

6.6 = y

Hope this helps :)

User Karim Harazin
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3.7k points