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4 years ago

11

Do the scatter plot .........................

1 answer:

Nuetrik [128]4 years ago

4 0

For this case we have the following table:
1 190
2 220
3 200
4 330
5 300
6 410
7 450
8 410
9 530
10 650
11 570
12 650
13 750
14 720
15 700
16 800
The scatter diagram shows that as the weeks increase, sales increase.
Answer:
See attached image.

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The points , (−15,1) and , (−7,r) lie on a line with slope 5/4. Find the missing coordinate r. Click image to enlarge

Nadya [2.5K]

The missing coordinate r is 11.

Solution:

Given points are (–15, 1) and (–7, r).

$x_{1}=-15, x_{2}=-7, y_{1}=1 \text { and } y_{2}=7$

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<u>To find the missing coordinate r:</u>

Slope formula:

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$$\frac{5}{4}=\frac{r-1}{-7-(-15)}$

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Do cross multiplication.

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