$x=4$x=4 oraz $\displaystyle y= \frac{15}{2}$\displaystyle y= \frac{15}{2}

$\displaystyle x= \frac{15}{2}$\displaystyle x= \frac{15}{2} oraz $y=4$y=4

$x=-4$x=-4 oraz $\displaystyle y=\frac{15}{2}$\displaystyle y=\frac{15}{2}

$\displaystyle x=- \frac{15}{2}$\displaystyle x=- \frac{15}{2} oraz $y=4$y=4