Question

which ordered pair is a solution to the equation y=2x+8

(2,1)
(-2,-3)
(0,8)
(8,0)

Answer 1

do you have options?

Answer 2

test each choice. that means for (2,1) take the first number (the 2) and use that instead of x in your equation

y = 2*x + 8
replace the x with 2:
y = 2*2 + 8
y = 4+8
y=12
now compare the 12 you get with the second number in (2,1)
are they the same number? NO. First choice does not work.

Can you try the next choice ?

Answer 3

0,8