What would y equal when you substitute x = 3 into the equation y = x² + 5 ?
y would equal 14.
y = (3)² + 5
y = 9 + 5
y = 14
To find the value of y when x = 3, substitute x = 3 into the given equation, which is y = x² + 5.
Substituting x = 3 into the equation, we get:
y = (3)² + 5
Now, simplify the equation:
y = 9 + 5
Add the numbers together:
y = 14
Therefore, when you substitute x = 3 into the equation y = x² + 5, y equals 14.