Parabola of the form y=x²: Finding a stationary point

What is the value of y for the function?

$y=x^2$

of the point $x=2$?

$y=4$

What is the value of X for the function?

$y=x^2$

of the point $y=16$?

$x=4,x=-4$

What is the value of X for the function?

$y=x^2$

of the point $y=36$?

$x=\pm6$

What is the value of X for the function?

$y=x^2$

of the point $y=4$?

Answers a + b

What is the value of y for the function?

$y=x^2$

of the point $x=6$?

$y=36$

What is the value of X for the function?

$y=x^2$

of the point $y=25$?

$x=5,x=-5$

What is the value of X for the function?

$y=x^2$

of the point $y=8$?

$x=\pm2\sqrt{2}$

What is the value of y for the function?

$y=x^2$

of the point $x=10$?

$y=100$

What is the value of y for the function?

$y=x^2$

of the point $x=12$?

$y=144$

What is the value of y for the function?

$y=x^2$

of the point $x=7$?

$y=49$