Question

Solve the systems of equations using substitution

Answer 1

C

Explanation:

`y = 2x + 3 \\ y = 3x + 1 \\ 2x = y - 3 \\ x = 0.5y - 1.5 \\ y = 3(0.5y - 1.5) + 1 \\ y = 1.5y - 4.5 + 1 \\ y - 1.5y = - 3.5 \\ 0.5y = 3.5 \\ y = 7`

`x = 0.5(7) - 1.5 \\ x = 3.5 - 1.5 \\ x = 2`

(2, 7)