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 18 Page 112

Isolate y on the left-hand side of the equation, then substitute the values for x.

Equation: y=7-6x/4

x y
- 2 19/4
- 1 13/4
0 7/4
Practice makes perfect
Let's begin by solving the equation for y.
6x=7-4y
6x-6x=7-4y-6x
0=7-4y-6x
4y+0=7-4y-6x+4y
4y=7-6x
4y/4=7-6x/4
y=7-6x/4
To find the value of y for each of the x-values, we substitute them into the equation and evaluate.
x 7-6x/4 y
-2 7-6 ( -2)/4 19/4
-1 7-6 ( -1)/4 13/4
0 7-6 ( 0)/4 7/4