What is the image of point (-1,-2) if the rotation is 90 degrees

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?

Which statement best explains whether the table represents a linear or nonlinear function? input (x) output (y) 2 5 4 10 6 15 8 20 it is a linear function because the input values are increasing. it is a nonlinear function because the output values are increasing. it is a linear function because there is a constant rate of change in both the input and output. it is a nonlinear function because there is a constant rate of change in both the input and output.