Question

R=(x, y:x,y€N 2x+y=41) 1)find the domain of R. 2)find the range of R.3)find the co-domain of R. 4)write R in roaster form. 4)find the pre-image of 19.​

Answer 1

Solution:

=> 2x + y = 41

= y = 41 - 2x

Since, x € N

x € [1 , ∞)

Therefore, Domain = [1, ∞)

» Range = (-∞ , 41]