What is the y intercept of a line that has a slope of 3 and passes through point ( -1, -7)?

Find an equation (in term of x) of line through the points (-1,3) and (1,4)

43lbs of tomatos cost $387. how much would 41lbs cost

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27