Y=1/3x-4; y=7/3x+4 solve by substitution

Answer Problem 1: 3 * (y+4)

Show Work:

1) y = (1/3) * x-4 / / - (1/3) * x-4

2) y - ((1/3) * x) + 4 = 0

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

4) y-1/3*x+4 = 0 / / - y+4

5) - 1/3*x = - (y+4) / / : - 1/3

6) x = ( - (y+4)) / (-1/3)

7) x = 3 * (y+4)

8) x = 3 * (y+4)

Answer Problem 2: Y=-7/12

Show Work:

Step 1: Flip the equation.

7/3 x+4=y

Step 2: Add - 4 to both sides.

7/3x+4+-4=y+-4

7/3x=y-4

Step 3: Divide both sides by 7/3.