The sum of a number, n, and 8 is multiplied by -4. Solve for n

Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge

How can i differentiate this equation?