Question

Given the equation -4(2-y)+5x=6(x-y). In order to graph this linear equation using a graphing calculator, it must be solved for y. Solve for y.

Answer 1

use the Distributive Law,

- 8 + 4y + 5x = 6x - 6y
Add 6y to both sides, we get
- 8 + 10y + 5x = 6x
Subtract 5x from both sides, we get
-8 + 10y = x
Add 8 to both sides, we get
10y = x + 8
Finally, divide both sides by 10, we get
y = (x + 8)/10

Make sure that you put the x+8 in parenthesis or you will be wrong with a different graph!