Please give the step by step explanation.I need it soon ... thank you​

What point is the projection of q on a) r b) s c) t

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)