if x=2 y=-1 is a solution of equation ax-y=5find value of a also find two more solutions of the equation
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ax - y = 5
One solution = ( 2 , -1)
Put x = 2 and y = -1
=> a × 2 - (-1) = 5
=> 2a + 1 = 5
=> 2a = 5 -1
=> 2a = 4
=> a = 2
The expression = 2x - y = 5
Put value of x = 0
2 × 0 - y = 5
=> - y = 5
=> y = -5
One solution is ( 0, -5)
Put y = 0
2x - 0 = 5
=> 2x = 5
=> x = 5/2
Other solution is ( 5/2 , 0)
One solution = ( 2 , -1)
Put x = 2 and y = -1
=> a × 2 - (-1) = 5
=> 2a + 1 = 5
=> 2a = 5 -1
=> 2a = 4
=> a = 2
The expression = 2x - y = 5
Put value of x = 0
2 × 0 - y = 5
=> - y = 5
=> y = -5
One solution is ( 0, -5)
Put y = 0
2x - 0 = 5
=> 2x = 5
=> x = 5/2
Other solution is ( 5/2 , 0)
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