Question

Question 5 Multiple Choice Worth 4 points)

(04.03) Mark bought gifts for his friends, and each gift cost $9. Let y represent the total cost and x represent the number of gifts. Write an equation to represent the proportional relationship
between the total cost and the number of gifts he bought
y = 8x
y= 1/8 x
y = 9x
y=1/9x

Answer 1

9x

Step-by-step explanation:

Cost of one gift is $9

cost of x gifts = 9 * x = 9x

Hence

y=9x is the required equation of our function where

y represent the total cost incurred and x is the number of gifts. To evaluate total cost we have to multiply the number of gifts with 9 .

For example if there are 7 gift bought, the total cost will be

y=9(7)

= 63

cost of 7 gifts is $63

Answer 2

y=9x

Explanation:

each friend receives a gift and it cost $9 for each friend