A straight line b curve c kinked me

please explain

CN Asset B Expected Return 10 Variance 81 400 Standard Deviation 9 20 > Correlation = -0.68 Wia 0.69 Variance Standard Deviation Expected Value W(b) 0.31 24.64 5.0 4.5 INSTRUCTIONS Put the needed formulas into cells i5 - 17 Make sure they depend on the data in cells d3 - e7 and the weights in h5 and 15 Then answer the questions below Standard deviation El 12.00 250 200 10.00 B 800 15.0 6.00 10.0 400 Portfolio 50 - sctfolio 2.00 > 00 0 02 08 1 12 0.00 000 0.6 Wia) 500 20.00 25 00 10.00 15.00 Standard deviaton 1) When correlation between the assets is perfectly positive the set of possible investments is a 2) When correlation between the assets is perfectly negative the set of possible investments is a CN Asset B Expected Return 10 Variance 81 400 Standard Deviation 9 20 > Correlation = -0.68 Wia 0.69 Variance Standard Deviation Expected Value W(b) 0.31 24.64 5.0 4.5 INSTRUCTIONS Put the needed formulas into cells i5 - 17 Make sure they depend on the data in cells d3 - e7 and the weights in h5 and 15 Then answer the questions below Standard deviation El 12.00 250 200 10.00 B 800 15.0 6.00 10.0 400 Portfolio 50 - sctfolio 2.00 > 00 0 02 08 1 12 0.00 000 0.6 Wia) 500 20.00 25 00 10.00 15.00 Standard deviaton 1) When correlation between the assets is perfectly positive the set of possible investments is a 2) When correlation between the assets is perfectly negative the set of possible investments is a