Question

If $m$ is the slope of a line parallel to $3x+4y+7=0$.Find the value of $16m^2$

Answer 1

Slope$=m=\frac{-co-efficientofx}{co-efficientofy}=\frac{-3}{4}$

$16m^2=16\times \frac{-3}{4}\times \frac{-3}{4}=16\times \frac{9}{16}=9$