What is the range of this function?

{(3,2), (-6,2), (7,3), (8,4)}

a) {2, 3, 4}
b) {7, 3, 8, 4}
c) {3, -6, 7, 8}
d) {3, 2, -6, 2}

what is the answer?

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )