Equation of an Altitude
## Formula
If the altitude passes through $$(x_1,y_1)$$ and the opposite side has slope $$m$$:
$$y-y_1=-\frac1m(x-x_1)$$
## Usage
- Used to find an altitude when the vertex and slope of the opposite side are known.
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CAT Formulas
Straight Lines
Equation of an Altitude
Equation of an Altitude
## Formula
If the altitude passes through $$(x_1,y_1)$$ and the opposite side has slope $$m$$:
$$y-y_1=-\frac1m(x-x_1)$$
## Usage
- Used to find an altitude when the vertex and slope of the opposite side are known.
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