Answer: (0, 0) (1, 3) (2, 6)
Step-by-step explanation:
Choose a number for Xena, then multiply that number by 3 to calculate what Yolie would say:
[tex]\begin {array}{c|l||c}\underline{Xena}&\underline{\quad Yolie\quad}&\underline{Xena, Yolie}\\ 0&3\times 0=0&(0,0)\\1&3\times 1=3&(1,3)\\2&3\times 2=6&(2,6)\\\end{array}[/tex]