91Ó°ÊÓ

Use the Midpoint Formula to find the midpoint of the line segments whose endpoints are $(-3,-5)$ and $(5,7)$. Plot the endpoints and the midpoint on a rectangular coordinate system.

Solve the system by using substitution:

$\left\{\begin{array}{l}4x^2+y^2=4\\ y=x+2\end{array}\right.$

Solve the system by using substitution.

$\left\{\begin{array}{l}{x}^2-y=0\\ y=2x-3\end{array}\right.$

Solve the system by using substitution:

$\left\{\begin{array}{l}{y}^2-x=0\\ y=3x-2\end{array}\right.$

Solve the system by using elimination:

$\left\{\begin{array}{l}{x}^2+y^2=9\\ x^2-y=9\end{array}\right.$

Solve the system by using elimination:

$\left\{\begin{array}{l}{x}^2+y^2=1\\ x-y^2=1\end{array}\right.$

Solve the system by elimination

$$\begin{gathered} x^2+y^2=25 \\ {y}^2-x^2=7 \end{gathered}$$

Solve the system by elimination.

$$\begin{gathered} x^2+y^2=4 \\ {x}^2-y^2=4 \end{gathered}$$

The difference of the squares of two numbers is $-20$. The sum of the numbers is 10. Find the numbers.

The difference of the squares of two numbers is 35. The sum of the numbers is $-1$. Find the numbers.