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Anarel [89]
3 years ago
14

The value of y varies directly with x. If x = 3, then y = 4. What is the value of x when y = 120 ?

Mathematics
2 answers:
Marizza181 [45]3 years ago
8 0

Answer:

x = 90

Step-by-step explanation:

If x = 3 and y = 4 then when y = 120 just find out what times 4 = 120

which is 30.

so just multiply 30 for x = 3, then the answer will be 90

x = 90

Over [174]3 years ago
5 0

Answer:

x=90

Step-by-step explanation:

x is directly proportional to y

Therefore, if the initial y value was 4 and the final y value is 120. This means that y initial had been multiplied 120/4 times, which is 30.

Same goes for x. If x initial is 3, then the final x value would be x/3=30. This means that x=3×30, which is equal to 90.

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