 Hello and welcome to the session. In this session we discuss the following question that says use the line graph shown that is this line graph to answer the following questions. The first question is what is the lowest temperature shown? What is the highest temperature shown? The second question is on how many days was the temperature at least 40 degrees? The third question says what is the temperature on day 7? First of all let's read this line graph. As you can see in this line graph the days are given on the horizontal reference line and the temperature which is given in degrees is shown on the vertical reference line. So from this line graph we can see that the temperature on day 1 is 40 degrees on day 2 is 60 degrees on day 3 is 40 degrees on day 4 is also 40 degrees on day 5 it's 80 degrees on day 6 it's 70 degrees on day 7 it's 20 degrees. So now let's try to answer the given questions. In the first question we have what is the lowest temperature shown and what is the highest temperature shown? Now from this line graph as you can see that this 20 degrees is the lowest temperature shown so we say lowest temperature shown is 20 degrees. Now the highest temperature it would be 80 degrees thus the highest temperature shown is 80 degrees. Now this answers the first part of the question. Let's try to answer the second part of the question now. In the second part we have on how many days was the temperature at least 40 degrees that is we have to write the number of days on which the temperature was 40 degrees and more than 40 degrees. So from this line graph as you can see that on three days we have the temperature 40 degrees and more than 40 degrees is shown on three days so in all we have total six days on which the temperature was at least 40 degrees. So on six days the temperature was at least 40 degrees. This gives the answer for the second part of the question. Now let's see what the third part of the question says. What is the temperature on day 7? This is the line graph. This is day 7. What is the temperature on day 7 which means that it is 20 degrees. So on day 7 the temperature is 20 degrees. This gives the answer for the third part of the question. Now we have answered all the three parts of the question. This completes the session. Hope you have understood the solution of the question.