Line ab and cd is parell cd is quall to 15 and ad is 9band ab is equall to 40.the lenght of line de is?

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.

b