Question

How do you write linear equations for all lines that pass through point (0, 4)?

Answer 1

Another familiar form of the linear equation is

`y=m*x+b`

In which `m` is the slope or gradient, and `b` is the `y`-intercept, that is the place where the graph will intersect the `y`-axis, which happens when `x=0`

The point `(0,4)` ís on the `y`-axis (since `x=0`), so `b=4`

The general form in this notation would then be:
`y=m*x+4`
With `m` any number (even 0)