Can you please help me with this problem 2x + y = -9

Find the slope of the line y =8/9x + 1.

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area