Find the coordinates of the points where the graph of line 3x+2y=6 drawn meets the co-ordinate axes?
A
x-axis at (a,0)=(−2,0); y-axis at (0,b)=(0,−3)
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B
x-axis at (a,0)=(2,0); y-axis at (0,b)=(0,3)
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C
x-axis at (a,0)=(−2,0); y-axis at (0,b)=(0,3)
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D
x-axis at (a,0)=(2,0); y-axis at (0,b)=(0,−3)
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Solution
The correct option is B x-axis at (a,0)=(2,0); y-axis at (0,b)=(0,3) Thegivenequationis3x+2y=6⟹y=6−3x2Herexistheindependentvariable.Weassignatleastany3valuesofxandobtainthecorrespondingvaluesofy.x=−2⟶y=6,x=4⟶y=−3,x=8⟶y=−9.Sotheorderedpairesofvaluesof(x,y)=(−10,−6),(10,2)&(20,6).Nowweplotthemonagraph.Fromthegraphweobtainthex−intercepta=2&y−interceptb=3∴ThepointsofintersectionofthegivenlinewithX−axisis(a,0)=(2,0)&ThepointsofintersectionofthegivenlinewithY−axisis(0,b)=(0,3)Ans−OptionB.