Question

Let R= {(x:y) y=2x-4, x € Z, y€Z}. If (a-2), (4b²) € R, then values of a and b are​

Answer 1

Answer:

y=2x-4 gives order pair as

1,-2; 2,0; 3,2; 4,4; 5,6; 6,8 etc

If we take 4b^2=4, then a-2 has to be 4 because order pair is 4,4

4b^2=4 gives b=1 and a - 2 =4 gives a=6