### Home > CALC > Chapter 8 > Lesson 8.3.3 > Problem 8-131

8-131.

**Multiple Choice:**The equation of the normal line to the curve*y*=*x*^{4}+ 3*x*^{3}+ 2 at the point where*x*= 0 is: Homework Help ✎*y*=*x**y*= 13*x**y*= 0*y*=*x*+ 2*x*= 0

A 'Normal line' is perpendicular to a 'tangent line' at the point of tangency. So first find the equation of the tangent line, then manipulate its slope.