SOLUTION: Plot the graph of the equations 8x - 4y = 12 and -4x + 2y = -6 and interpret the result.

Algebra ->  Linear-equations -> SOLUTION: Plot the graph of the equations 8x - 4y = 12 and -4x + 2y = -6 and interpret the result.      Log On


   

Question 197814: Plot the graph of the equations 8x - 4y = 12 and -4x + 2y = -6 and interpret the result.
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
You are given the equations for two lines. The point where they intersect can be found by 'solving' this set of equations. If the two lines are 'identical' they intersect at everypoint. If the two lines are parallel, the intersect at no points.
You can graph these equations using online tools (I like geogebra)
8x+-+4y+=+12
y+=+-3+%2B+2x
-4x+%2B+2y+=+-6
y+=+-3+%2B+2x
You can plot these and see they are the same line (coincident)
graph%28400%2C400%2C+-10%2C10%2C-10%2C10%2C-3+%2Bx%29