Question

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

Answer 1

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`