Find the slope of each line

The figure above shows the lengths of thesides of a rectangle in cm. find the valuesof x and y and then the area of the rectangle. sides: top= 3x - yleft= 3y + 4bottom= 2x + yright= 2x - 3 use both methods, elimination and substitution, if possible.

What is the length of the unknown leg in the right triangle ?

What is the solution set of the quadratic inequality x^2-5< or equal to 0