Quadratic Functions: Standard Form Answers

The graph of which function will have a maximum and a y-intercept of 4?

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

Which must be true of a quadratic function whose vertex is the same as its y-intercept?

Which error did Mathieu make?

Question text not available

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?

Question text not available

⇒ 2

Use the drop-down menus to describe the key aspects of the function f(x) = –x2 – 2x – 1.

Use the drop-down menus to describe the key aspects of the function f(x) = –x2 – 2x – 1.

✔ when x < –1when x > –1for all real numbers of xfor no values of x

when x < –1✔ 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