What is the constant of proportionality in the equation y = 2x?
1 answer:
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The answer is the third option.
The explanation is shown below:
1. You must keep on mind the information given in the exercise:
- She bough 3 pounds of coffee.
- She bought 2 pounds of chocolate.
- She spent a total of $24.
2. Therefore, you can call the price per pound of coffee and the price per pound of chocolate
.
3. When you multiply 3 pounds by the price per pound of coffee, you obtain the amount of money she spent for 3 pounds. When you multiply 2 pounds by the price per pound of chocolate, you obtain the amount of money she spent for 2 pounds. If you add both amounts, you obtain the total spent, which was $24.
4. Therefore, you can express this as following:
Simple....
using the formula
to find slope....
1.) (9,2)(4,3)
(No)
2.) (9,2)(3,4)
(No)
3.) (2,9)(3,4)
(No)
4.) (2,9)(4,3)
(YES!)
Thus, your answer.
using the formula
1.) (9,2)(4,3)
2.) (9,2)(3,4)
3.) (2,9)(3,4)
4.) (2,9)(4,3)
Thus, your answer.