Condition for a Line to Be Tangent
For:
$$y=mx+c$$
to touch:
$$y^2=4ax$$
the condition is:
$$c=\frac{a}{m}$$
Usage
- Used to test tangency directly from the slope-intercept form.
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CAT Formulas
Parabola
Condition for a Line to Be Tangent
Condition for a Line to Be Tangent
For:
$$y=mx+c$$
to touch:
$$y^2=4ax$$
the condition is:
$$c=\frac{a}{m}$$
Usage
- Used to test tangency directly from the slope-intercept form.
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