Question 224203
The y-intercept is ALWAYS where x=0.  So, if x=0, then y = -10.  As an ordered pair, this is (0,-10).


When the equation is in this form, it is easiest to graph by graphing the x and y intercepts.  The x-intercept is where y=0.  If y=0, then x=-10.  Graph these two points, and connect the dots.  The line should look like this:

{{{graph(300,300,-12,12,-12,12, -x-10) }}}

For an additional explanation of Graphing, see my own website by doing a "Bing" search for my last name "Rapalje". Look for my website "Rapalje Homepage" near the top of the search list. On my webpage, look for "Basic, Intermediate and College Algebra: One Step at a Time." Select "Basic Algebra" and look in "Chapter 4," "Section 4.03 Intercept method." This is my own non-traditional explanation that my own students ALL found easier to understand than the one given in traditional textbooks. See also the corresponding section in my "MATH IN LIVING COLOR" pages in which I solved a lot of these types of problems in COLOR!! I also have a video that was made in one of my classes a few years ago teaching this lesson.  You can see this video FREE on my website.  From my Homepage, look for the link "Rapalje Videos in Living Color," choose "Basic Algebra," and look for the topic "Graphing and Slope of a Line.


R^2 


Dr. Robert J. Rapalje, Retired
Seminole State College of Florida
Altamonte Springs Campus