Question

Need help in math!!!

Answer 1

Given rules

• y=5x
• y=x+12

Equate and solve

• 5x=x+12
• 4x=12
• x=3

Opt ion B is correct as no other contains 3 as x

Answer 2

(3,15)

Explanation:

Rule 1

5x = y

Rule 2

x+12 = y

Set them equal

5x = x+12

Subtract x from each side

5x-x = x+12-x

4x= 12

Divide by 4

4x/4 = 12/4

x=3

5x=y

5*3 = y

15 = y

The solution is (3,15)