Question

20. A doctor measured a patient's resting pulse rate at 80 beats per minute. Draw a

Answer 1

Answer:

1440 beats

Step-by-step explanation:

Given that a doctor measured a patient's resting pulse rate at 80 beats per minute.

i.e. if no of beats in a dependent variable on time then we have a linear relationship between y - no of beats and x - no of minutes

Here slope= rate of change of y with respect to x $= m=80$

And we have y intercept as 0 since when time is 0 no heart beat. i.e. (0,0) is a point on the line

The equation would be

$y=80x$,x≥0

When  $x=18, \\y = 18(80)\\y = 1440$ beats.

Graph is enclosed.

Answer 2

1,440 80times 18is 1440