Question

6) At the store, Amanda buys a pair of pants. Shirts are all on sale for the same price! This

following equation represents the total price, y, she pays.
y = 15.5 x + 25.99
a) What is the y-intercept?
b) What does the y-intercept represent in this situation?
c) What is the slope?
d) What does the slope represent in this situation?
e) If Amanda's total bill is $72.49, how many shirts did she buy?
d) If Amanda decides to buy 5 shirts, what will her total bill be?

Answer 1

a- 25.99

b- The y intercept here is the price of the pants as for x =0, no shirts from the sale were bought only one pair of pants

c- slope m is 15.5

d- the price of the shirts

e- x= no of shirts= 3

f- y= total = 103.49

for e - y=72.49= 15.5x +25.99

15.5x =72.49-25.99

15.5x = 46.5

hence x =3

for f y=15.5 x 5 + 25.99

hence y= 103.49