Determine which of the lines, if any, are parallel. Explain. line a passes through (-1,-2) and (1,0)
line b passes through (4,2) and (2,-2)
line c passes through (0,2) and (-1,1)

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.