What is the slope and y intercept of this line? y = -4x + 7

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

The points (1, 7) and (0, 2) fall on a particular line. what is its equation in slope-intercept form?