Question

Part F About what is the average change in distance for each increase of 1 in the iron number ? What does this mean in terms of the situation?

Part D
What is the y-intercept of the correct graph? What is the y-intercept of the incorrect graph? Are the y-intercepts the same?

Answer 1

The average change in distance for each increase of 1 in the iron number is -10, and the y-intercept of the graphs are not the same

The average change in distance?

From the graph, we have the following points:

(x,y) = (4, 145) and (3,155)

The average change in distance is calculated using:

$m = \frac{y_2 - y_1}{x_2 -x_1}$

So, we have:

$m = \frac{155 - 145}{3 - 4}$

Evaluate

m = -10

Hence, the average change in distance for each increase of 1 in the iron number is -10

What the average rate in (a) represents?

The rate, -10 in (a) means that:

The distance decreases by 10 yards for each number of iron

The y-intercept

The y-intercept is the point where the graph crosses the y-axis

From the attached graphs, we have:

• The correct graph has a y-intercept of 185
• The incorrect graph has a higher y-intercept (195)

Hence, the y-intercept of the graphs are not the same

Read more about linear regression at:

https://brainly.com/question/17844286

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