Question 172954
Solve x + 4y = 12 for y. 


x + 4y = 12
x - x +4y = 12 - x
0+4y = 12-x
4y = -x + 12
1/4 * 4y = 1/4 *(-x + 12)
1 * y = 1/4*(-x) + 1/4*(12)
y=-1/4 x +3   or y = -0.25x + 3