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The line $y=2 x+c$ is a tangent to the parabola $y^2=16 x$, if $c$ equals
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$2$
According to the condition,
$c=\frac{4}{2}=2$\(=\frac{a}{m}\), where \(\mathrm{a}=4, \mathrm{~m}=2\).
$c=\frac{4}{2}=2$\(=\frac{a}{m}\), where \(\mathrm{a}=4, \mathrm{~m}=2\).
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