Precalculus Examples

$(- 3, 9)$ , $(0, 9)$

Use the midpoint formula to find the midpoint of the line segment.

$(\frac{x_{1} + x_{2}}{2}, \frac{y_{1} + y_{2}}{2})$

Substitute in the values for $(x_{1}, y_{1})$ and $(x_{2}, y_{2})$ .

$(\frac{- 3 + 0}{2}, \frac{9 + 9}{2})$

Add $- 3$ and $0$ .

$(\frac{- 3}{2}, \frac{9 + 9}{2})$

Move the negative in front of the fraction.

$(- \frac{3}{2}, \frac{9 + 9}{2})$

Add $9$ and $9$ .

$(- \frac{3}{2}, \frac{18}{2})$

Divide $18$ by $2$ .

$(- \frac{3}{2}, 9)$

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