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​Q16: Question – Paper 2 – June 2019

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Content:​

• Part a) Conversion Graphs
• Part b) Plotting Linear Graphs (similar to this)
• Part c) Simultaneous Equations: Graphical​

Quizzes:

• ​​​Part a) Conversion Graph
• Part b) Plotting Linear Graphs (similar to this)
• Part c) Simultaneous Equations: Graphical

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Question

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16)
The graph below is used to convert between

• temperature in degrees Fahrenheit (F)
  and
• temperature in degrees Celsius (C).

​a) Use the graph to convert 40 degrees Fahrenheit into degrees Celsius.

[1 mark]​

​At one temperature, T,
      the number of degrees Celsius is double the number of degrees Fahrenheit.
The graph of     C = 2F     can be drawn to help find this temperature.

b) On the grid opposite, draw the graph of     C = 2F     for values of F from –25 to 25​
You may use the table to help you.

[2 marks]​​

c) Use your graph to estimate the value of T.
​Give your answer in degrees Celsius.

[2 marks]​​​

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