y=18x+4

The slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept.

y=mx+b

Combine 18 and x.

y=x8+4

Rewrite in slope-intercept form.

y=18x+4

y=18x+4

Using the slope-intercept form, the y-intercept is 4.

b=4

Find the Y-Intercept y=1/8x+4