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Andru [333]
3 years ago
14

The graph below represents the price of sending text messages using the services of a phone company. What is the constant of pro

portionality? A. 12 B. 24 C. 46. D. 48

Mathematics
1 answer:
anastassius [24]3 years ago
5 0
Ah, direct variation/proportion.
That is simply a linear equation with a y-intercept of 0.
So... let's solve this.
Simply put, a direct variation multiplies the x-value by a constant to get the y-value.
Let's take the point (2, 48) on this graph and solve for the constant of proportionality:
2a=48
We easily solve that and get our answer of a=24. (B)

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