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 2 years ago
The scatter plot below shows the weights in ounces of several kittens at various ages. What is the best equation of the trend line through these points?
A.
y = 10x
B.
y = 4x
C. y = 1/4x + 10
y = 4x + 10
 2 years ago
The scatter plot below shows the weights in ounces of several kittens at various ages. What is the best equation of the trend line through these points? A. y = 10x B. y = 4x C. y = 1/4x + 10 y = 4x + 10

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mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1This is how you proceed for slopeintercept equations. From the graph, read off the yintercept (=10). Read off the slope (about 15). Check the 4 options to see which one satisfies both conditions. If you can use help reading off the slope and intercept, please post.

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1Are you familiar with how to find the yintercept of a given equation in slopeintercept form?

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1An equation y=mx+b is in slopeintercept form, where m=slope and b=yintercept. dw:1357747417191:dw

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1From the given graph, can you spot the yintercept?

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1no. Yintercept is where the curve (line in this case) intersects the yaxis. Can you read it off?

jayda
 2 years ago
Best ResponseYou've already chosen the best response.0so the y intercept is where you have the curved line?

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1357748329385:dw Can you figure out the yintercept of the given graph?

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1can you do the rest now?

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1What is the approximate slope and what is the intercept?

jayda
 2 years ago
Best ResponseYou've already chosen the best response.0isnt the intercept 10 though?

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1Right, yintercept is 10. Did you find the slope?

mathmate
 2 years ago
Best ResponseYou've already chosen the best response.1Your answer D is correct. You have eliminated A and B because the yintercepts there are zero. Good job. Between C and D, the difference is the slope. The graph shows that y increases from 10 to 14 between 0 and 1. This implies a slope of (1410)/(10)=4. Therefore answer D is correct.
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