A quality control manager is inspecting four digital scales

Ineed in figuring out this problem.

What function has a range {yly< 5}? question on picture above^

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?