### INTRODUCTORY EXERCISES

**(3)**

Write the equation for the parabolas.
(a) vertex (0,0), passing through (1,12) and symmetric about the axis x = 0
(b) vertex (2,0), symmetric about the x-axis and passing through (3,2)

**HINT:**

The general equation for parabolas is (y - k) = 4c(x - h)^{2}
or (x - h) = 4c(y - k)^{2}

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