Quadratic Functions: Standard Form Answers
What is the vertex of the parabola in the graph?
The graph of the function f(x) = x2 + 8x + 12 is shown. Which statements describe the graph? Check all that apply.
The axis of symmetry for the function f(x) = –2x2 + 4x + 1 is the line x = 1. Where is the vertex of the function located?
Which functions have an axis of symmetry of x = –2? Check all that apply.f(x) = x2 + 4x + 3f(x) = x2 – 4x – 5f(x) = x2 + 6x + 2 f(x) = –2x2 – 8x + 1f(x) = –2x2 + 8x – 2
Use the drop-down menus to describe the key aspects of the function f(x) = –x2 – 2x – 1.
What is the vertex of the function f(x) = x2 + 3x + ?
✔ –301.515
Consider the function f(x) = x2 + 2x – 15. What are the x-intercepts of the function?
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3
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2
Which must be true of a quadratic function whose vertex is the same as its y-intercept?
Which error did Mathieu make?
Use the drop-down menus to describe the key aspects of the function f(x) = –x2 – 2x – 1.
✔ when x –1for all real numbers of xfor no values of x
when x –1for all real numbers of xfor no values of x
✔ all real numbersall real numbers less than –1all negative real numbersall positive real numbers
all real numbersall real numbers less than –1✔ all numbers less than or equal to 0all numbers greater than or equal to 0
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