Assume that n^2 is divisible by 3. Does it follow that n is divisible by 3

Hello,

We can work in three different cases which cover all the possibilities for n

Case 1 - We can find k such that n = 3k-1

Case 2 - We can find k such that n = 3k

Case 3 - We can find k such that n = 3k+1

So, the only case where is divisible by 3 is actually when n is divisible by 3, so if   is divisible by 3 , n is divisible by 3

Thanks

step-by-step explanation:

the answer is d

step-by-step explanation:

y+3=-4(x-2)

y+3=-4x+8

  -3         -3  

y=-4x+5