Today we continued to work on slope and the y-intercept. We did problem 4.4 which showed how you can tie those two concepts into every day life. Part A was about a girl who got money on her birth day but wouldn't tell her sister how mush so instead she gave her clues. The first clue was after 5 weeks I will have $175 and the second clue was after eight weeks she will have $190. She saves a certain amount of her allowance each week. when it asks for the amount of her allowance she saves per week she it is actually asking for the slope or rate of change. When it asks for the amount of money she receives from her grandfather you are finding the y-intercept. This is the equation you would use.

A= total amount of $ saved

W= # of weeks

A=5w + 150

The 5 is the slope but it is also the part of her allowance she saves each week. The 150 is the y-intercept or where she starts but is also the amount her grandfather gives her.

Nick S.