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Determine whether (-4,5) is a solution of 4x + 8y =1 I would like the steps so I can practice this.

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The coordinate (-4,5) is an (x,y) coordinate -- so, x = -4 and y = 5.

Plug x and y into the equation 4x + 8y = 1

4(-4) + 8(5) = 11?
-16 + 40 = 11?
24 = 11?

24 does not equal 11, so the coordinate (-4,5) is not a solution of the equation.
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