Answer:
1. 30 Pounds
2. 30 Pounds
Step-by-step explanation:
As we see in the graph the amount of clay available is represented by the Y-axis and the amount of clay bought is represented by the X-axis. Each line in both axis are counted as 1:10.
Now, the amount clay bought starts at 0 and the clay available starts with 20. This shows that if the teacher did not buy any clay, there will be 20 pounds of clay available.
In the first question the problem indicates that the teacher purchased 10 more pounds. Now the plot of the X-axis is at the 10 point and the Y-axis is at the 30 point. Where they meet represents the amount of both axis. This then shows that if the teacher buys 10 more pounds of clay, the amount of clay available will be 30 pounds total.
In the second question it indicates that if the clay available is at 50 pounds, the teacher would've bought 30 pounds of clay. As we can see in the graph the 3rd point is the representative of 50 pounds of clay. Now if we look down on where the point is in the X-axis, we can see that it is in the 30 range.
