Question

Is the ordered pair (1, 4) a solution to the equation y = 2x + 1?

If yes, is it the only solution?

A.
No, because the ordered pair does not fit the equation.

B.
Yes, but this ordered pair is not the only solution to the equation.

C.
Yes, and it is the only ordered pair that fits the equation.

Answer 1

Let's plug in x-coordinate x=1:

y = 2(1)+1 = 2 + 1 = 3, which is not 4.

So the answer is A.