What is the equation of the line that has a slope of -2 and passes through the point (-1, 2)?

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?