To find the value for y in the equation y = 9 + 3x, substitute a specific value for x into the equation and solve for y.
The value for y in the equation y = 9 + 3x depends on the value of x.
To find the value of y, you need to substitute a specific value for x into the equation and then solve for y.
For example, if x = 2, the value of y can be found by substituting x = 2 into the equation:
y = 9 + 3(2)
y = 9 + 6
y = 15
So when x = 2, y is equal to 15.