In parts (a) and (b) below, copy the number lines and use them to show the solution to the problems.
The answer is where the point moves to.
on a number line.
See parts (a) and (b) for help.
Rachel said that
will be positive because two negatives always give a positive. Draw the problem on a number line, then explain whether you agree or disagree with Rachel.
Explain why a negative number plus a negative number is always a negative number.