What transformations would result in the image shown? ΔABC is translated right 5 units and down 5 units.
ΔABC is reflected over both axes.
ΔABC is reflected over the y-axis and translated down 5 units.
ΔABC is reflected over the x-axis and translated right 5 units.

it's

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.