Y=2x + 1 x=3. how do I find the Y in each equation

Since we already have X, I'm guessing all the question asks you to do is plug it in and solve it to get a Y = equation

If I'm right, then the process is

Y=2 (3) + 1 (putting 3 in place of x)

Y=6+1

Y=7

Which makes 7 your answer

Sub 3 for x

y=2 (3) + 1

y=6+1

y=7

y=7 when x=3