On graph paper 3x-5y-15.Show that x=1 and y=2is not a solution
(please use graph and use a paper i really need that)
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Q. 38
4.4
( 5 Votes )
Draw the graph of
Class 9th
RS Aggarwal & V Aggarwal - Mathematics
8. Linear Equations in Two Variables
Answer
3x + 5y – 15 = 0
⇒ 5y = 15 – 3x
When, x = 0 then,
⇒ y = 3
When, x = 5 then,
⇒ y = 0
Plotting (0, 3) and (5, 0) we get the following graph,
The blue line indicates the required graph of 3x + 5y – 15 = 0
Now, to show that (1, 2) is not the solution of
3x + 5y – 15 = 0
We put x = 1 and y = 2 in
Since, LHS ≠ RHS therefore, x = 1, y = 2 is not a solution 3x + 5y – 15 = 0.
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