Quadratic Functions: Question Preview (ID: 20961)

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 When does a quadratic function have 2 real solutions? a) When the discriminant is greater than 0 b) When the discriminant is less than 0 c) When the discriminant is equal to 0 d) Never When does a quadratic function have 1 real solution? a) When the discriminant is greater than 0 b) When the discriminant is less than 0 c) When the discriminant is equal to 0 d) Never When does a quadratic function have 0 real solutions (2 complex)? a) When the discriminant is greater than 0 b) When the discriminant is less than 0 c) When the discriminant is equal to 0 d) Never When does the graph of the quadratic open upwards? a) When a is positive b) When a is negative c) When a is zero d) Never When does the graph of a quadratic open downwards? a) When a is positive b) When a is negative c) When a is zero d) Never When does a quadratic function have a maximum? a) When the graph opens upwards b) When the graph opens downwards c) When a is positve d) Never When does a quadratic function have a minimum? a) When a is positive b) When a is negative c) When the graph opens upwards d) Both answers 1 and 3 are correct What is the equation of the axis of symmetry of a quadratic function? a) x = -b/2a b) b^2-4ac c) x = b/2a d) x = -b/4a When can a set of data be modeled by a quadratic function? a) When the first differences are constant b) When the second differences are constant c) When the third differences are constant d) When the fourth differences are constant What is the coordinate of the vertex of a quadratic function? a) (x, y) b) (-b/2a, b/2a) c) (-b/2a, f(-b/2a) d) (-h,-k)
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