Zad1 Rozwiąż graficznie układ równań.
a)( 0=x-y+1 b) (y=4x-3 c) (2y-x=-6
(2x=y (y=5 (y=-4
0=x-y+1 0 = x-2x+1 0=-x+1 0-1=-x -1=-x |:(-1) x=1
y=4x-3 5=4x-3 5+3=4x 8=4x|:4 x=2
2y-x=-6 2*4-x=-6 8-x=-6 -x=-6-8 -x=-14|:(-1) x=14
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0=x-y+1 0 = x-2x+1 0=-x+1 0-1=-x -1=-x |:(-1) x=1
y=4x-3 5=4x-3 5+3=4x 8=4x|:4 x=2
2y-x=-6 2*4-x=-6 8-x=-6 -x=-6-8 -x=-14|:(-1) x=14