# NCERT Class 8 Mathematics Solutions: Chapter 15 –Introduction to Graph Exercise 15.1 Part 4

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1. The following graph shows the temperature forecast and the actual temperature for each day of a week.

(a) On which days was the forecast temperature the same as the actual temperature?

(b) What was the maximum forecast temperature during the week?

(c) What was the minimum actual temperature during the week?

(d) On which day did the actual temperature differ the most from the forecast temperature?

Answer:

(a) On Tuesday, Friday and Sunday, the forecast temperature was same as the actual temperature.

(b) The maximum forecast temperature was .

(c) The minimum actual temperature during the week was .

(d) Difference between actual and forecast temperature:

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

So, the maximum difference was on Thursday.