Final answer:
To verify the accuracy of Chase's math model for -4 + (-3), a correct representation would show a horizontal line moving left from -4 to -7 on the number line. Without seeing Chase's actual drawing, we can't confirm its accuracy but we can define the correct model.
Step-by-step explanation:
The question asked is whether the model of -4 + (-3) on a number line drawn by Chase is accurate. To verify this, we should recall that adding a negative number is the same as moving left on the number line. Starting from -4, we would move to the left three additional units, ending up at -7. Without knowing specifically how Chase has drawn his number line, we cannot confirm whether his representation is correct. However, if he accounted for this and ended at -7, then his model would be accurate.
If Chase's model did not end at -7, then it would be incorrect, and a proper model would consist of a horizontal line that starts at -4 and moves three units to the left, ending at -7, indicating the sum of -4 and -3 is indeed -7.