Answer:
<em>y = - </em><em> x + </em><em> </em>
Step-by-step explanation:
y = 12x - 9
Slope of line perpendicular to given is m = -
P(7, 10)
y - 10 = - (x - 7)
A
sqrt[(2 - 0)² + (sqrt(21) - 0)²]
sqrt(4 + 21)
sqrt(25)
5