Question

(a) Find the solution to the equation 2y +4=8 by trial and error method.​

Answer 1

Answer:

if y =0, then 4=8 which is not possible.

if y=1, then 6=8 which is not possible

if y=2, then 4+4 =8. thus 2 is the sol

Answer 2

Given,2y+4=8.

l.h.s,put y=1

2(1)+4=6

so wrong.

2(2)+4=8

hence ,correct