Answer:

Step-by-step explanation:
The information we have about the line is:
slope

Y- intercept is (0,4) here, the y-coordinate 4 is the point where the line crosses the y-axis and is the y-intercept usually represented by the letter b:

Now, the general equation for a line in the slope-intercept form is:

We substitute the known values:

This is the equation for the line in slope -intercept form.