Question

how do you find the y intercept

Answer 1

The y-axis is where x=0, so setting x=0 in your equation will output the y intercept when you then solve or y. For more solutions to textbook problems, be sure to check out http://www.slader.com/s/eWFrZXlnbGVl. I submit a lot of content there as well.

Answer 2

All you do is plug in 0 for x and your intercept will be y=

Answer 3

The y-intercept is the point where the line crosses the y-axis.
In the example to the right, the line crosses the y-axis at point (0,3). Therefore b = 3. The slope is 2.The slope intercept equation is
y = 2x + 3.