Write an equation of the line that is perpendicular to -x+y=15 and passes through the point (2,-5)

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

Me find the value of x each figure.

Use sigma notation to represent the following series for 9 terms.