What’s is the slope of the line that passes through 9,9 and 1,16

Write the function for the graph. (1.8) (0,4)

An animal shelter has fixed weekly expenses of $750. each animal is the shelter costs an additional $6 a week. during the summer months, the weekly expenses are at least $1170. write and solve an inequality that represents the number of animals at the shelter for expenses to be at least $1170 a week.

Which equation has a graph that is a parabola with a vertex at(-2, 0)