Consider the following three expressions for each of the number lines in PART A, PART B, and PART C
a+b
• a-b
b
PART A: Plot the three expressions on the number line below. Show or explain your reasoning.
b
0
a
PART B: Plot the three expressions on the number line below. Show or explain your reasoning
b
a
0
PART C Plot the three expressions on the number line below. Show or explain your reasoning
a
b
0
PART D: How does the location of 0 relative to a and b affect the locations of the three expressions on the number line. Show or
explain your reason
