Can somebody tell me the answers and explain to me how u got these answers

How many lines can be drawn through points j and k? 0 1 2 3

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

△abc is similar to △xyz. also, side ab measures 6 cm, side bc measures 18 cm, and side xy measures 12 cm. what is the measure of side yz ? enter your answer in the box.