HELP!

Write the equation of the line of best fit using the slope-intercept formula y=mx+b. Show all your work, including the points used to determine the slope and how the equation was determined.
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What does the slope of the line represent within the context of your graph? What does the y-intercept represent?

Question

HELP!

Write the equation of the line of best fit using the slope-intercept formula y=mx+b. Show all your work, including the points used to determine the slope and how the equation was determined.
~
What does the slope of the line represent within the context of your graph? What does the y-intercept represent?

eriyalovesu · Answer

Name
Relationship
Arm Span In Inches
Height In Inches
Eriya Russell
(the student)
63 
64
Heather Russell
Mom
74.3
76.5
Adrian Russell
Dad
76.50
78
Amy Russell
Cousin 
55
55
Airis Russell
Sister
61.50
61
Jacob
Cousin 
56
58

eriyalovesu · Answer

eriyalovesu · Answer

I don't know how to get into slop intercept form.

evoker · Answer

You need to draw a line that goes roughly between all the points and then find intercept where it crosses the y-axis, and the slope by using the slope formula for two points on the line.

eriyalovesu · Answer

@Evoker I got y=3x-120

evoker · Answer

slope looks a bit large , to me

evoker · Answer

looks pretty close to y=x

eriyalovesu · Answer

what?

evoker · Answer

I was just saying that while it is not an exact fit to y=x, the slope of 3 and y intercept of -120, are pretty far away from my visual estimate of the line.

eriyalovesu · Answer

oh okay thank you