If f(x)=2x, where is the y−intercept of g(x)=f(x)+4?

Given:

To find:

The y-intercept of g(x).

Solution:

We have,

Putting , we get

Substitute x=0 to find the y-intercept of g(x).

Therefore, the y-intercept of g(x) is at point (0,4). So, the y-intercept of g(x) is 4.

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