1)to draw graph of 4x+5y=19,find y when x=1.
a)4. b)3 c)4 d)-3
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Answer:
4x+5y=19
=4×1+5y=19 [x=1]
=4+5y=19
=5y=19-4
=5y=15
15
=y= --------
5
=y=3
ans y=3
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