Answer question 4 - Lambda = 0 k = 1

Figure 11

Answer question 4 - Lambda = 0 k = -1

Figure 12
Figure 11
C=60 Lambda=0 k=1
Figure 12
C=60 Lambda=0 k=-1
When you compare the pictures from the left with the right than they are almost identical.
What that means is that based what is observed (redshift) it is very difficult to distinquish between the two.
Specific what is difficult is to calculate the cosmological constant. The main reason is because the influence locally is very small.

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