Math111_Mod7_PIN_Discussion.docx

# Math111_Mod7_PIN_Discussion.docx - My PIN is 32742 Find the...

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My PIN is 32742 Find the Vertex and X Intercepts of: y = 3 x 2 + 2 x 7 To find the X intercepts, we must rewrite the equation 3 x 2 + 2 x 7 = 0 Use the quadratic formula: X 1,2 = 2 ± 2 2 4 3 ∗(− 7 ) 2 3 Simplify: X 1,2 = 2 ± 88 6 Solve for X: X 1 = 2 + 88 6 = 1 + 22 3 X 2 = 2 88 6 = 1 22 3 The X Intercepts are: ( 1 + 22 3 , 0 ) ( 1 22 3 , 0 )

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To find the Vertex, find the X-coordinate using the formula:
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