Final answer:
To calculate y for x=14 in the equation y = 9 + 3x, substitute 14 for x, leading to y = 9 + 3(14), which simplifies to y = 51.
Step-by-step explanation:
The student is asking to find the value of y when x=14 for the linear equation y = 9 + 3x. This equation represents a line where 9 is the y-intercept (the value of y when x is 0) and 3 is the slope (the change in y for each unit increase in x). To calculate the value of y when x is 14, simply replace x with 14 in the equation and solve:
y = 9 + 3(14) = 9 + 42 = 51
Therefore, the value of y when x is 14 is 51.