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So how did he find the y-int??

Margaret059

by Margaret059 at December 15, 2009

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He set x equal to 0, then solved for y. y=-10

noobz noobz December 16, 2009

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By definition, the y intercept occurs where a graph crosses the y axis (x = 0). So, he plugged in 0 for x. f(0) = 0^2 + 3(0) - 10 f(0) = -10 The y intercept is (0,-10)

bpeters bpeters December 16, 2009

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