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If the point (a,7) lies on the graph of the equation 5x-y=8, then a= a) -3 b) 3 c) 1/5
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2 votes
If the point (a,7) lies on the graph of the equation 5x-y=8, then a=

a) -3
b) 3
c) 1/5

User Maz
by
7.8k points

1 Answer

7 votes
when y=7

5x- 7 = 8

5x=8+7

5x=15

x=15:5
x=3
the answer is b
User Jose Rocha
by
7.3k points
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