Free brainliest for math problem multiple choice (EASY)!!!

What does the sign of the slope tell you about a line?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

The coordinates of vortex a’ are (8,4) (-4,2) (4,-,4) the coordinates of vortex b’ are (6,6)(12,-,12)(12,12) the coordinates of vortex c’ are(-2,,12)(4,12)(12,-4)