What is the name of the property given below if a b = 0 then a = 0 b = 0 or both a = 0 and b = 0?

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

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Rewrite so the subject can be y in the formula d=m-y/y+n