Don and Jacob want to know who reads more pages per hour. Don keeps track of the number of pages he reads in a graph, and Jacob keeps track of how many pages he reads in a table.
How many pages per hour does each boy read, and who reads at a faster rate?
Don: pages per hour
Jacob: pages per hour
The person who reads faster is: (Type D for Don or J for Jacob)
@{ Jacobs Reading Log}
|Time| (h) |2| |3.5| |5| |7|
|Pages Read| |42| |73.5| |105| |147|
http://static.k12.com/calms_media/media/1503000_1503500/1503262/2/549dcd765b14e4ed7004aa6256d48e1d2163e89d/MS_IMC-140523-131008.jpg
@Directrix
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OpenStudy (bossimbacon):
@StudyGurl14
OpenStudy (bohotness):
which one do you think is the answer?
OpenStudy (bossimbacon):
it isn't a answer choice i have to put the answer in, as in putting the number in
OpenStudy (bossimbacon):
@wio
jimthompson5910 (jim_thompson5910):
find the slope of each to determine their rate
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jimthompson5910 (jim_thompson5910):
you can use the slope formula
\[\Large m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}\]
OpenStudy (bossimbacon):
how do yu use the slope formula @jim_thompson5910
jimthompson5910 (jim_thompson5910):
notice up top you have y2 - y1
that tells you to subtract y coordinates of two points
jimthompson5910 (jim_thompson5910):
then using the same exact two points, and subtracting in the same order, you subtract x coordinates x2 - x1
finally you reduce the fraction to get the simplified slope
jimthompson5910 (jim_thompson5910):
you can pick any two points on the graph
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OpenStudy (bossimbacon):
(4), (72)
jimthompson5910 (jim_thompson5910):
(4,72) is one point
what is another?
OpenStudy (bossimbacon):
(6), (108)
jimthompson5910 (jim_thompson5910):
you write it like this: (6,108)
OpenStudy (bossimbacon):
Oh kay
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jimthompson5910 (jim_thompson5910):
I'm going to make (x1,y1) = (4,72) and (x2,y2) = (6,108)
notice how I subtract the coordinates
\[\Large m = \frac{y_{2}-y_{1}}{x_{2}-x_{1}} = \frac{108-72}{6-4} = ??\]
OpenStudy (bossimbacon):
so do you subtract 108-6 and 72-4?
jimthompson5910 (jim_thompson5910):
no, focus on just the top and subtract
then focus on the bottom and subtract
OpenStudy (bossimbacon):
36/2 @jim_thompson5910
jimthompson5910 (jim_thompson5910):
reduce that as much as you can
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jimthompson5910 (jim_thompson5910):
36/2 is not fully reduced
OpenStudy (bossimbacon):
16/2?
jimthompson5910 (jim_thompson5910):
no
jimthompson5910 (jim_thompson5910):
36 and 2 have what factor in common?
OpenStudy (bossimbacon):
16
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jimthompson5910 (jim_thompson5910):
divide each by this common factor
OpenStudy (bossimbacon):
my b 26
jimthompson5910 (jim_thompson5910):
no, 2
OpenStudy (bossimbacon):
lol aha yeah 2
jimthompson5910 (jim_thompson5910):
36 divided by 2 = ??
2 divided by 2 = ??
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OpenStudy (bossimbacon):
18/1
jimthompson5910 (jim_thompson5910):
which is just 18
jimthompson5910 (jim_thompson5910):
so Don reads 18 pages per hour
OpenStudy (bossimbacon):
i have to go rn but can you explain the wholee process whil im gone?
OpenStudy (bossimbacon):
and here is your fan and medal
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jimthompson5910 (jim_thompson5910):
I can explain when you get back
OpenStudy (bossimbacon):
wait @jim_thompson5910 you blocked me i can't fan you
jimthompson5910 (jim_thompson5910):
hmm I don't remember why, it might have been by accident, you're unblocked now
OpenStudy (chunkymonkay):
im on this question right now did you happen to know the answer
OpenStudy (bossimbacon):
no sadly
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