Line r has a slope of -6/7. Line s is parallel to line or what is the slope of line s

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.