To calculate the unit rate for the tables:

Table A

The unit rate is the change in grade per unit score. Using the data:

• When the score increases from $0$ to $1$, the grade increases by $25 - 0 = 25$.
• Similarly, from $1$ to $2$, $2$ to $3$, and $3$ to $4$, the increase in grade is consistently $25$.

Unit rate for Table A: $25$ (grade per score).

Table B

Similarly, calculate the unit rate:

• When the score increases from $0$ to $1$, the grade increases by $40 - 20 = 20$.
• From $1$ to $2$, $2$ to $3$, and $3$ to $4$, the increase in grade is $20$.

Unit rate for Table B: $20$ (grade per score).

Would you like to know how this applies to other scenarios or additional insights?

Follow-up Questions:

1. What does the unit rate represent in these tables?
2. How can we compare the proportionality of Table A and Table B?
3. Can we express the relationships in these tables using equations?
4. What happens to the unit rate if the scores are multiplied by a constant factor?
5. How could these tables be used to create graphs, and what would their slopes indicate?

Tip:

The unit rate corresponds to the slope of the line if the data is graphed, showing how one variable changes with respect to the other.