Condition for Parallel Lines in General Form
## Formula
For:
$$A_1x+B_1y+C_1=0$$
and:
$$A_2x+B_2y+C_2=0$$
the lines are parallel if:
$$A_1B_2-A_2B_1=0$$
## Usage
- Used to test whether two lines are parallel without calculating their slopes.
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CAT Formulas
Straight Lines
Condition for Parallel Lines in General Form
Condition for Parallel Lines in General Form
## Formula
For:
$$A_1x+B_1y+C_1=0$$
and:
$$A_2x+B_2y+C_2=0$$
the lines are parallel if:
$$A_1B_2-A_2B_1=0$$
## Usage
- Used to test whether two lines are parallel without calculating their slopes.
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