write a linear equation to model this situation?

0 ⤊

write a linear equation to model this situation?

You borrow $70 from your brother. To repay the loan, you pay him $7 per week. Use w to denote the number of weeks and y as the balance on the loan.

2006-10-08 11:34:53 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

4 answers

Since it's a linear equation, y=mw + b.

When w=0, y=70, so b=70.

Since the balance decreases at the rate of $7/week, the slope is

change in y / change in w = -7 / 1 = -7.

Therefore, the equation is y = -7w + 70.

2006-10-08 11:39:57 · answer #1 · answered by James L 5 · 0⤊ 1⤋

w=70/7=10
i dont know what u mean by the balance of the loan

2006-10-08 18:43:15 · answer #2 · answered by moony 2 · 0⤊ 0⤋

y = -7w + 70

2006-10-11 14:57:08 · answer #3 · answered by insurebizz 2 · 0⤊ 0⤋

70-7w=y I think.

2006-10-08 18:37:00 · answer #4 · answered by Anonymous · 0⤊ 0⤋