Combining Equations  College Algebra

0:00  0:07Since point p is a point that is shared, by both the line, y equals 850, and the

0:07  0:13line y, equals 10x plus 150, both of these lines have the same y value at that

0:13  0:21point. Since the y value of y equals 850 is always 850, that means that this the

0:21  0:28y value of 10x plus 150 at point p. So, we just need to substitute 850 into the

0:28  0:36spot of y, in the second equation. That gives us a single equation of 850 equals

0:36  0:4410x plus 150. And yes, x is the only variable in this equation.
 Title:
 Combining Equations  College Algebra
 Video Language:
 English
 Team:
 Udacity
 Project:
 MA008  College Algebra
 Duration:
 0:45
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