Hi

Maximum heart rate R is R=220- A, where A is the person’s age

and R is the heart rate in beats per minute.

R(20) = 220-20 = 200

R(70) = 220-70 = 150

 Ordered pairs 

(70,150) and 

(20,200)   m = -50/50 = -1   |Using the point-slope formula, 

Using the standard slope-intercept form for an equation of a line y = mx + b 

 where m is the slope and b the y-intercept.  

  As stated: R = -A + 220

Plot (70,150) and (20,200)and connect with line.

Graph says as age increases, that Maximum heart rate number decreases



 

RELATED QUESTIONS

Can someone help me with this problem?  I put it through last night but I forgot to put... (answered by venugopalramana)

will someone please help me with the last problem i posted i don't understand it and... (answered by fractalier)

Can someone please help me to understand the below problem. I am working with mutliplying  (answered by scott8148)

Sorry, I forgot to put consecutive in the problem I last posted. Here it is again in... (answered by scott8148)

Can someone help me out on this problem?  I put it through last night, but I typed the... (answered by stanbon,funmath)

Could someone please help me graph this problem?

  I need to graph the inequality:

  (answered by venugopalramana)

I posted this problem and someone was able to proved the algebraic equation for it, but... (answered by scott8148,actuary,jojo14344)

This is Probability/Hypothesis testing in Statistics.  Can someone help me with this.  I... (answered by stanbon)

I am having a hard time with my math today. I have a problem that I am close to answering  (answered by lwsshak3)