Which number line shows 1/3 and it's opposite

Simplify the expression. enter the correct answer.

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu