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Quadratics

Problems

Graphing Quadratic Functions

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Problem : Find the y -intercept of y = 2x 2 + 4x - 6 .

(x, y) = (0, - 6)

Problem : Find the x -intercept(s) of y = 6x 2 - 12x - 18 , if they exist.

{(- 1, 0),(3, 0)}

Problem : Complete the square: y = x 2 - 8x + 3

y = (x - 4)2 - 13

Problem : Complete the square: y = 3x 2 + 18x + 20

y = 3(x + 3)2 - 7

Problem : Complete the square: y = - 5x 2 + 10x - 10

y = - 5(x - 1)2 - 5

Problem : Complete the square and graph: y = x 2 + 4x + 5

y = (x + 2)2 + 1

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