1) What is the independent variable on this graph? a) Strength of material b) The y axis c) High carbon steel d) Percentage of carbon 2) What kind of graph is this? a) Pie chart b) Line graph c) Bar chart d) Histogram 3) Which description is best for this graph? a) Decreasing quickly at first, then slowly b) Increasing in a straight line c) Decreasing steadily d) Decreasing slowly at first, then quickly 4) What is the maximum time each day for listening to a personal stereo at 96dB? a) 1 hour b) 2 hours c) 3 hours d) 4 hours 5) Look at the graph in front of you. What was Harry's heart rate after 4 minutes? a) 60 b) 64 c) 68 d) 70 6) At what time does his heart rate first reach 77bpm? a) 6 mins b) 7 mins c) 8 mins d) 9 mins 7) Which of these statements is true? a) The heart rate finishes the same as it began b) His heart rate increases as time increases c) He measured his heart rate for 22 minutes d) His heart beats fastest at 16 minutes

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