What is the equation of a line that passes through (6,-7) and has a slope of -6

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.

(x-5)1/2+5=2 what is possible solution of this equation