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13.3_practicepp

# 13.3_practicepp - upward The quadratic function s(t =-16t 2...

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Mat120 - Homework Practice Name___________________________________ Section 13.3 Class Hour:______________________________ Find the coordinates of the vertex for the parabola deﬁned by the given quadratic function. 1) f(x) = x 2 - 10x - 1 Sketch the graph of the quadratic function. Identify the vertex, intercepts, and the equation for the axis of symmetry. 2) f(x) = - x 2 + 2x + 8 Vertex:_____________ AOS:______________ x - Intercept(s):_______________________ y - Intercept:________________ x -10 -5 5 10 y 10 5 -5 -10 Page 1 of 2

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Determine whether the given quadratic function has a minimum value or maximum value. Then ﬁnd the coordinates of the minimum or maximum point. 3) f(x) = 4x 2 - 2x - 6 4) f(x) = - 4x 2 + 8x Solve. 5) A person standing close to the edge on top of a 208 - foot building throws a baseball vertically
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Unformatted text preview: upward. The quadratic function s(t) = -16t 2 + 64t + 208 models the ball's height above the ground, s(t), in feet, t seconds after it was thrown. How many seconds does it take until the ball ﬁnally hits the ground? Round to the nearest tenth of a second if necessary. Page 2 of 2 Answer Key Testname: 13.3_PRACTICEPP 1) (5,-26) 2) x-10-5 5 10 y 10 5-5-10 Vertex: (1, 9) x-intercepts: (-2, 0) and (4, 0) y-intercept: (0, 8) axis of symmetry: x = 1 3) minimum; ( 1 4 ,- 25 4 ) 4) maximum; (1, 4) 5) 6.1 seconds Page 3 of 2...
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13.3_practicepp - upward The quadratic function s(t =-16t 2...

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