Which expression is
equivalent to
(7+85-2r²) +-47²-10+2r)

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?

Point a is at 12, and point d is at 56. point c is midway between a and d, and point b is midway between a and c. which of these is the coordinate of b?

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?