Question

(SHOW YOUR WORK)

a) Solve the equation
6x - 3y =9 for y.



b) Use your answer from part (a) to determine the value of y when x= -6

Answer 1

a) y = 2x - 3 and b) y = -15

Explanation:

a) Solve for y

6x - 3y =9

-3y = -6x + 9

Divide by -3, neg/neg = pos

y = 2x - 3

b) x = -6

y = 2x - 3

y = 2(-6) - 3

y = -12 - 3

y = -15