Answer:
look this up ok
Step-by-step explanation:
Graph axis of symmetry vertex and max and min, domain and range
The lower quartile is 21 because when you make it in order and find the median you seperate it then when you get the lower median it is 21
Your welcome
The x intercept is where y=0. If y=0, then 3x=18, so x=6. The y intercept is where x=0. If x=0, then 2y=18, so y=9.