Answer:
6; 7; She's WRONG
Step-by-step explanation:
a) The height is the absolute difference between y-values, which is 4 - (-2) = 6
b) The length is the absolute difference between x-values, which is 4 - (-3) = 7
c)She isn't, because one side is 6 and another is 7, but a square has sides of equal length