What equation is parallel to y=0.6x+3

Anything with a slope of 0.6
y = 0.6x - 22
y = 0.6x + 6

Chope that

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post