x = 1

y =x +3

y=4

If X = 1, then substitute 1 for X in y = x + 3.

1 + 3 = 4
y = 4

To solve the equation and find the value of y, substitute the value of x into the equation and perform the addition:

Substituting the value of x, which is 1, into the equation:

y = 1 + 3

Adding 1 and 3:

y = 4

Therefore, the value of y is 4.