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Dmitriy789 [7]
3 years ago
6

Which of the following expressions represents a function?

Mathematics
2 answers:
trasher [3.6K]3 years ago
8 0

Answer:

y = 4x − 1

Step-by-step explanation:

∵ A relation is called function if each input value has a different or unique output value,

In the line x = 1,

There are infinite output values for the input value of 1,

So, x = 1 is not a function,

In the relation {(3, 2), (3, –2), (4, 5), (4, –5)},

3 has two output values 2 and - 2,

Thus, {(3, 2), (3, –2), (4, 5), (4, –5)} is not a function,

In line y = 4x - 1,

For each value of x there is a different value of y,

So, y = 4x - 1 is a function,

In the circle, 4x^2+y^2=16,

For 2 values of x there is one value of y,

eg : for x = 2 and x = -2,

y = 0,

So, 4x^2+y^2=16 is not a function.

lora16 [44]3 years ago
4 0
The correct answer is y=4x-1
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