Question

I need help please with this question

Answer 1

(2, 14 )

Explanation:

y = 4x + 6 → (1)

y = 7x → (2)

Substitute y = 7x into (1)

7x = 4x + 6 ( subtract 4x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2

Substitute x = 2 into either of the 2 equations and evaluate for y

Substituting into (2)

y = 7(2) = 14

solution is (2, 14 )

Answer 2

`y = 4x + 6 \\ = > 7x = 4x + 6 \: \: \: (since \: \: y = 7x) \\ = > 7x - 4x = 6 \\ = > 3x = 6 \\ = > x = (6)/(3) \\ = > x = 2`

• So, x = 2
• Therefore, y = 7x = 7(2) = 14

Answer:

x = 2, y = 14