Proste o równaniach y=(m-2)x oraz y= 3/4x+7 są prostopadłe. Wtedy

$\displaystyle m= -\frac{5}{4}$\displaystyle m= -\frac{5}{4}

$\displaystyle m= \frac{2}{3}$\displaystyle m= \frac{2}{3}

$\displaystyle m= \frac{11}4{}$\displaystyle m= \frac{11}4{}

$\displaystyle m= \frac{10}{3}$\displaystyle m= \frac{10}{3}