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April 4th, 2019, 06:28 PM   #1
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From: tornto

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Interpreting Graphs

A liquid is heated in lab using hot plate the graph temperature vs time is shown below


https://imgur.com/c6ehBn5


answer using letter A, B, C, D FROM THE ABOVE GRAPH


1) WHERE IS THE RATE OF CHANGE ZERO?

2) WHERE IS THE RATE OF CHANGE CHANGING?

3) WHERE IS THE RATE OF CHANGE POSITIVE?

4) WHERE IS THE RATE OF CHANGE GREATEST?

5) CALCULATE RATE OF CHANGE FOR SECTION A, INCLUDING UNITS?



MY ANSWER FOR

1) C

2) B

3) A

4) D

5) NOT SURE HOW TO SOLVE


PLEASE CHECK MY ANSWERS AND HELP ME


THANKS
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April 4th, 2019, 07:00 PM   #2
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rate of change is essentially the slope of the graph.

You got 1) correct

for 2) a constant rate of change indicates a straight line with some slope.
A changing rate of change is indicated by a curved, i.e. not straight, line.
See if you can answer this now.

3) You correctly identified A but there is another labelled section with a positive
rate of change.

4) The greatest rate of change corresponds to the steepest slope. This looks like it
should be section B

5) Just pick two points along A and use them to calculate the slope.
I'd use (0,0) and (20,30)
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April 4th, 2019, 07:55 PM   #3
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Quote:
Originally Posted by romsek View Post
rate of change is essentially the slope of the graph.

You got 1) correct

for 2) a constant rate of change indicates a straight line with some slope.
A changing rate of change is indicated by a curved, i.e. not straight, line.
See if you can answer this now.

3) You correctly identified A but there is another labelled section with a positive
rate of change.

4) The greatest rate of change corresponds to the steepest slope. This looks like it
should be section B

5) Just pick two points along A and use them to calculate the slope.
I'd use (0,0) and (20,30)

For question 2) i am thinking its D because constant rate is changing

FOR QUESTION 3) SHOULD BE A AND B?

WAITING FOR YOUR FEEDBACK

THANKS
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April 4th, 2019, 08:39 PM   #4
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Quote:
Originally Posted by yorkmanz View Post
for question 2) i am thinking its d because constant rate is changing

for question 3) should be a and b?

Waiting for your feedback

thanks
2) yes

3) yes
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