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CBSE Class 10 Answered

2x-y-4=0 &x+y+1=0 graphically
Asked by Shantha13ask | 12 Aug, 2018, 07:52: PM
answered-by-expert Expert Answer
begin mathsize 16px style 2 straight x space minus space straight y space minus space 4 space equals space 0 rightwards double arrow 2 straight x space minus space straight y space equals space 4 If space straight x space equals space 0 space then space straight y space equals space minus 4 space and space If space straight y space equals space 0 space then space straight x space equals space 2 Taking space points space left parenthesis 0 comma space minus 4 right parenthesis space and space left parenthesis 2 comma space 0 right parenthesis space on space the space straight x minus straight y space plane comma space draw space straight a space line space 2 straight x space minus space straight y space minus 4 space equals space 0 straight x space plus space straight y space plus space 1 space equals space 0 straight x space plus space straight y space equals space minus 1 If space straight x space equals space 0 space then space straight y space equals space minus 1 space and space If space straight y space equals space 0 space then space straight x space equals space minus 1 Taking space points space left parenthesis 0 comma space minus 1 right parenthesis space and space left parenthesis negative 1 comma space 0 right parenthesis space on space the space straight x minus straight y space plane comma space draw space straight a space line space straight x space plus space straight y space plus straight z space equals space 0. The space point space at space which space both space the space lines space intersect space is space the space solution space of space the space two space equations. end style
Answered by Yasmeen Khan | 13 Aug, 2018, 01:18: PM

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