10+-+Sec.+7.5A

7.5A Special types of systems: Infinite solutions by graphing & substitutions
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Infinite lines- when you graph two lines and both the lines are the same line it means it has infinite solutions.
How to solve! 2x+y=3 4x+2y=8 (set the equation equal to y) y=-2x+3 y=-2x+4 (then what you get to equal to why you plug back in and solve it for "x" then you have for x&y points for the graph)

= example one: =



= example two: =





=//**Stephanie's practice**// := = equation one: x+2y=8 = = equation two: x+2y=4 = = = = = = = = = = Kelly's Practice! (: =


 * Line 1: y= 2x-4
 * Line 2: y= 3x + 2

Tyler Practice: line 1 2x+y=3 line 2 4x+2y=8