4-3+2(x-1) if x = 0 ? ? that's doesnt make sence

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).