The points ( - 2,3) and (r, - 9) fall on a line with a slope of 4. what is the value of r?

What is the value of the expression below? 148+(-6)| + |– 35= 7|

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

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.