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  1. The lines «math style=¨font-family:`Times New Roman`¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mn»4«/mn»«mi»x«/mi»«mo»-«/mo»«mn»5«/mn»«mi»y«/mi»«mo»-«/mo»«mn»15«/mn»«mo»=«/mo»«mn»0«/mn»«/math» and «math style=¨font-family:`Times New Roman`¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mfrac»«mn»4«/mn»«mn»5«/mn»«/mfrac»«mi»x«/mi»«mo»-«/mo»«mn»3«/mn»«mo»=«/mo»«mi»y«/mi»«/math» are coincident. Use substitution or elimination to show that an attempt to solve the system results in a true statement.



    15 = 15 is a true statement. There are an infinite number of solutions to this system.