Question

if the point (2,-2) lies ont the graph of the equation 5x+ay=4,find the value of a

Answer 1

a=3
Hope its the correct answer

Answer 2

Hey


The given equation is :-


5x + at = 4


And ,

A point P ( 2 , -2 ) lies on it .


So ,

x = 2

y = -2


Concept to be used :-

If we put the value of x and y in this equation , then the equation will become 0 .

So ,


5x + ay - 4 = 0


=> 5 ( 2 ) + a ( - 2 ) - 4 = 0


=> 10 - 2a - 4 = 0


=> 6 - 2a = 0


=> 2a = 6


=> a = 3


thanks :)