Which graph shows a function whose inverse is also a function?

Using the concept of inverse function, it is found that the first graph shows a function whose inverse is also a function.

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A function f(x) will only have an inverse function if: , that is, a value of y will have only one respective value of x.

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A similar problem is given at link

A good way to determine if a line represents a valid function is to use the vertical line test.

To do this, you imagine a vertical (up and down) line moving across your graph from left to right. It should only be touching the line at one point at a time.

If it is touching more than one point on the line at a time, the line is not a valid function.

The first line and its inverse both pass the test.

The second line passes the test, but its inverse does not.

The third line also passes the test, but again, its inverse does not.

The same applies to the fourth line and its inverse.

sorry can't

step-by-step explanation:

i googled though and something came up but it was in science langueage not common english sooo

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation: