Which are the solutions of the quadratic equation?
x2 = 7x + 4

third option.

Step-by-step explanation:

Move the and to the left side of the equation:

Now you need to apply  the Quadratic formula:

In this case you can identify that:

Then you can substitute values into the Quadratic formula and get the following solutions:

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.