Practice problem
List the values of yyy for which the system {x2+y2−25=0x2−4y−4=0\begin{cases} x^2+y^2-25=0 \\ x^2-4y-4 = 0 \end{cases}{x2+y2−25=0x2−4y−4=0 can have a solution (x,y)(x,y)(x,y).
-7
-3
0
3
7
Type a concept, like “slope” or “photosynthesis”.
