Question

Michael swam $2,000$ yards on each of eighteen days. The scatterplot above shows his swim time for and corresponding heart rate after each swim. The line of best fit for the data is also shown. For the swim that took $34$ minutes, Michaels actual heart rate was about how many beats per minutes less than the rate predicted by the line of best fit?

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

The correct option is B $2$

From the graph the actual heart rate$=150$
but calculated heart rate from best fit line$=148$
Difference between actual and calculated$=150-148=2$
Option B is correct.