How the graph of f(x) = |x| compare with the graph of g(x) = -1/2|x|?

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4

Which of the following vectors are orthogonal to (2,1)? check all that apply