Let R={(x,y): x,y belongs to Z, y=2x-4} If(a,-2) and (4,b2) belongs to R , then write the values of a - Maths - Relations and Functions

Question

Let R={(x,y): x,y belongs to Z, y=2x-4} If(a,-2) and (4,b2)
belongs to R , then write the values of a and b

Srishruthi Sriram · Accepted Answer

-2 = 2(a) - 4 {Using the given relation}
ie 2a = 2 which gives a = 1
b2 = 2(4) - 4 { U sing the relation}
ie b2 = 4 which gives b = +2 or -2

Let R={(x,y): x,y belongs to Z, y=2x-4}.If(a,-2) and (4,b2) belongs to R , then write the values of a and b.