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OpenStudy (winsteria):
FAN AND MEDAL The scatterplot and trend line show a positive correlation between advertising costs and sales. Using the points (6.4, 117) and (6.6, 120), what is the slope of the trend line? 1)–15 2)–12 3)12 4)15
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OpenStudy (winsteria):
@atreyu6s3x6
OpenStudy (pawanyadav):
D as 120-117/(6.6-6.4)
OpenStudy (anonymous):
okay so to find slope we use: m=y2-y1/x2-x1
OpenStudy (pawanyadav):
Which is 15
OpenStudy (winsteria):
120-117=3 6.6-6.4=0.2 3/0.2=15
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OpenStudy (winsteria):
Thank you
OpenStudy (pawanyadav):
No problem
OpenStudy (anonymous):
correct good job
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