Condition for Intersection of Two Lines

Rarely Tested

Condition for Intersection of Two Lines

## Formula

Two lines:

$$A_1x+B_1y+C_1=0$$

and:

$$A_2x+B_2y+C_2=0$$

intersect at a unique point if:

$$A_1B_2-A_2B_1\ne0$$

## Usage

- Used to determine whether two lines have a unique point of intersection.

No related questions available for this formula yet.

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