13. If the radius of a cylinder is tripled but its curved surface area is unchanged, then its -height will be
(a) tripled
(b) constant
(c) one-sixth
(d) one-third​

Four equations are shown below. equation 1: y=2*equation 2: y=2x-5equation 3: y=x2 + 6equation 4: tdentify one linear equation and one nonlinear equation from the list. why each equation you identified is linear or nonlinear. nd one nonlinear equation from the list. state a reasonlinear equation