Question 179590
3x-11y=9 MULTIPLY BY 3 & ADD.
-9x+33y=-27
9X-33Y=27
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0+0=0
THESE TWO EQUATIONS ARE EQUAL (THE SAME) WITH 2 UNKNOWNS THUS INFINITELY MANY SOLUTIONS. 
-11Y=-3X+9 OR Y=-3X/-11+9/-11 OR Y=3X/11-9/11
-9X-33Y=27 OR -33Y=9X+27 OR Y=9X/-33+27/-33 OR Y=3X/11-9/11
{{{ graph( 300, 200, -6, 5, -5, 10, 3x/11 -9/11, 3x/11 -9/11) }}} (graph 300x200 pixels, x from -6 to 5, y from -5 to 10, of TWO functions 3x/11 -9/11 and 3x/11 -9/11).