Video

Systems of equations number of solutions: y=3x+1 & 2y+4=6x (Full video)

Khan Academy

Supporting grades: 8

Description: Sal examines an interesting system of equations through graphing. We're told to graph this system of equations and identify the number of solutions that it has. So they want us to graph each of these equations and think a little bit about the solutions. This first equation's already in slope-intercept form, y is equal to 3x plus 1.

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