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How to find y-intercept given y = 4x?

Answer 1

Abigail Allen

The y-intercept is the value of #y# where a given function crosses the y-axis. At all points along the y-axis, #x=0#

Simply inserting #0# for #x# in the function definition supplies the y-intercept value

#y = 4x " at "x=0"#

#rarr y=4(0) = 0#

The y-intercept is #0#

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Answer 2

Avery Alexander

To find the y-intercept given the equation y = 4x:

Recognize that the y-intercept occurs when x = 0.
Substitute x = 0 into the equation: y = 4(0)
Simplify: y = 0

So, the y-intercept is at the point (0, 0).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.