Can someone please help me

3. solve by graphing: y = 2x + 6 x + y = -3

Which math sentence can be used to determine if the triangle is a right triangle?

Choose the equation below that represents the line that passes through the point (2, 4) and has a slope of 3. a) y − 4 = 3(x − 2) b) y − 2 = 3(x − 4) c) y + 4 = 3(x + 2) d) y + 2 = 3(x + 4)