Pearson Algebra 1 Common Core, 2011
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Pearson Algebra 1 Common Core, 2011 View details
5. Literal Equations and Formulas
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Exercise 15 Page 112

Let's begin by solving the equation for y.
5x=-4y+4
5x-4=-4y+4-4
5x-4=-4y
5x-4/-4=-4y/-4
-5x+4/4=4y/4
-5x+4/4=y
y=4-5x/4
To find the value of y for each of the x-values, we substitute them into the equation and evaluate.
x 4-5x/4 y
1 4-5( 1)/4 -1/4
2 4-5( 2)/4 -3/2
3 4-5( 3)/4 -11/4