Ok someone do 3, 5, 6, and 7. Each question is 5 points, so ill make it 20 points for those questions answered. (pls I need help my little brain can't understand these words.)

answer: 0+0=0

step-by-step explanation:

that is the only answer that can make 0

answer: -0.5 would be the most likley outcome

step-by-step explanation:

fd

step-by-step explanation:

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.