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If y is directly proportional to x and y = -15 when x=3 find the value of y when x is 20?
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If y is directly proportional to x and y = -15 when x=3 find the value of y when x is 20?

User Ellisdod
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1 Answer

5 votes
Answer: y = 2

Step-by-step explanation:

When x = 3, y = -15

And x and y are directly proportional.

thus x + k ==> y + k

when x = 3 + 17 ==> y = -15 + 17

=> x = 20 ==> y = 2
User Lauro
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