Question

Determine whether the ordered pair(6,21) is a solution to the equation y=2x+8

Answer 1

Not a solution.

Explanation:

Substitute x and y co-ordinates in the equation.

• If LHS = RHS, then ( 6, 21) is the solution of the equation.
• If LHS ≠ RHS, then (6 ,21) is not the solution of the equation.

y = 2x + 8

LHS = y

= 21

RHS = 2x + 8

= 2*6 + 8

= 12 + 8

= 20

LHS ≠ RHS. So, (6,21) is not a solution.