2? if not the correct answer you might need to provide more information
step-by-step explanation:
y = 5x + 17
a perpendicular line will be the opposite reciprocal slope of the given equation. the slope given is -1/5 so the opposite reciprocal is 5
find b:
7 = 5 (-2) + b
7 = -10 + b
17 = b
write equation
use pothagarean therom
a^2+b^2=c^2 so first ac
acm is a right triangle because c= 90°
and am (the hypotenuse or c) =16+9 =25
but there is not enough info we need another angle or side length