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The pair of variables x=–3, y=8 is the solution to the equation 5x+by=17. Find the coefficient b.

The pair of variables x=–3, y=8 is the solution to the equation 5x+by=17. Find the coefficient b.
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The pair of variables x=–3, y=8 is the solution to the equation 5x+by=17. Find the coefficient b.

User Sergey Shafiev
by
8.1k points

1 Answer

1 vote
x = -3 , y =8
Plug in the variables
5(-3) + b(8) = 17
-15 + 8b = 17
Add 15 to both sides of the equation. By doing this, you can eliminate the 15 on the left side.
8b = 17 + 15
8b = 32
Divide 8 on both sides
b = 4


User Gannaway
by
7.9k points
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