Is (2,12)(2,12)left parenthesis, 2, comma, 12, right parenthesis a solution of the system?

Sara sells beaded necklaces she makes a profit of 4 dollars pn every neclace she sells which table represents the profit sara makes

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Can someone me i’m confused. will give brainliest and a whole bunch of points