3 years ago

Given the system of equations, what is the y-coordinate of the solution?5x - 4y = 7x = 5 - y

1 answer:

6 0

5x - 4y = 7
x = 5 - y

5(5 - y) - 4y = 7
25 - 5y - 4y = 7
-5y - 4y = 7 - 25
-9y = - 18
y = -18/-9
y = 2 <== y coordinate is 2

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