Using a directrix of y = −2 and a focus of (2, 6), what quadratic function is created?

f(x) = −one eighth (x − 2)2 − 2
f(x) = one sixteenth (x − 2)2 + 2
f(x) = one eighth (x − 2)2 − 2
f(x) = −one sixteenth (x + 2)2 − 2

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

How to determine whether two known pairs of points are on the same line.

Handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony?