Quadratic Functions: Standard Form Answers

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

✔ –301.515

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 –1all numbers less than or equal to 0all numbers greater than or equal to 0