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timama [110]
3 years ago
8

Suppose y varies directly as x. if y = 3 when x = 15, find when y = 5.​

Mathematics
1 answer:
julia-pushkina [17]3 years ago
4 0

Answer:

              X = -9

Step-by-step explanation:

y = k X for some fixed number constant k.

 

-5 = k (15)

 

k = -5/15 = -1/3

 

So y = (-1/3)X

 

When y = 3 ---> 3 = (-1/3)X

                        X = -9

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