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Solve the equation for y. then find out the value of Y when X = 3. problem
-2y + 7x = 9

1 Answer

7 votes

Answer:

y = 6

Explanation:

given

- 2y + 7x = 9 ( subtract 7x from both sides )

- 2y = - 7x + 9 ( divide through by - 2 )


(-2)/(-2) y =
(-7)/(-2) x +
(9)/(-2) ( simplify )

y =
(7)/(2) x -
(9)/(2)

or

y = 3.5x - 4.5

substitute x = 3 into the equation

y = 3.5(3) - 4.5 = 10.5 - 4.5 = 6

User Jwillmer
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