Question

The following are on a parabola defining the edge of a ski

Answer 1

9514 1404 393

Answer:

  a) 16A -4B +C = 1

  b) 4A -2B +C = 0.94

  c) C = 1

Step-by-step explanation:

Substitute the x- and y-values into the general form equation.

a. A(-4)² +B(-4) +C = 1

  16A -4B +C = 1

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b. A(-2)² +B(-2) +C = 0.94

  4A -2B +C = 0.94

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c. A(0)² +B(0) +C = 1

  C = 1

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Additional comment

Solving these equations gives A=0.015, B=0.06, C=1. The quadratic is ...

  0.015x² +0.06x +1 = y