Answer:
The new point would be (-7, -4)
Step-by-step explanation:
In order to find this, we know that the y value would not change. This is because it is being reflected over a vertical line, which has no effect on y values.
Next, to find the y value, we know that the average of the current x value and the new x value will be equal to the line of reflection. Therefore the following equation is true.
(x1 + x2)/2 = x
Now we can input the original value (x1) and the end result to solve for the new x value (x2)
(x1 + x2)/2 = x
(9 + x2)/2 = 1
9 + x2 = 2
x2 = -7
This gives us a final ordered pair of (-7, -4)
