When you add the two equations together, you get this:
0 = 14
Now, when is THAT true? It's never true that 0 = 14, so that tells you that there is NO ordered pair (x, y) which will make both equations true at the same time. In other words, these lines do not intersect.
To see why, solve each equation for y to get the equation in slope-intercept form. Then look at the slopes for the two lines....several days ago, you had a question in which the two equations had the same slope. Remember what I told you then?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.