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

8-131.
  1. Multiple Choice: The equation of the normal line to the curve y = x4 + 3x3 + 2 at the point where x = 0 is: Homework Help ✎

    1. y = x

    2. y = 13x

    3. y = 0

    4. y = x + 2

    5. 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.