3. a. What trend line, in slope-intercept form, models the data from the Example 2 Try it?
b. Explain why there could be no data points on a trend line,
yet the line models the data.
EXAMPLE 2 Understand Correlation
How can the relationship between the hours after sunrise, x, and the
temperature, y. be modeled?
The data points on the scatter plot approximate a line. Sketch a trend line
that best fits the data to determine whether a linear function can model the
relationship
Temperature After Sunrise
dy
72
I
68
Temperature (7)
The trend line suggests
that a linear function can
model the relationship
64
60
2 4 6 8 10
Hours After Sunrise

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step-by-step explanation:

i don’t see a picture

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)

add -60 to 120 which will result in : 2x+3y=180

then subtract 2x: 3y=-2x+180

lastly, divide by 2: y= -2/3x+60

hope this is the answer you're looking for: )