Question

The scatter plot shows the ages of people at a retreat and the number of events they participated in. The equation for the regression line is = 0.5x – 1.3. Based on the equation, which statement is true?

Answer 1

For each increase of one year of age, the number of events a person participated in increases by 1.3.

For each increase of one year of age, the number of events a person participated in increases by 0.5.

For each increase of one year of age, the number of events a person participated in decreases by 0.5.

For each increase of one year of age, the number of events a person participated in decreases by 1.3.

Answer 2

the increase/decrease corresponds to the slope
what is the slope of your line ?

Answer 3

just a sec

Answer 4

would it be 0.5

Answer 5

yes, you compare
y= mx+b
with
y= 0.5x -1.3

the slope is m and is 0.5 in your problem

also, is the line going up or down ?

Answer 6

up

Answer 7

so you have enough info to answer this question.

Answer 8

I would say that it increases because the line goes up, but - 1.3 would be decreased right

Answer 9

@phi I asked a question

Answer 10

The -1.3 is the y-intercept,

which for this problem doesn't make logical sense because at age 0, the new born would participate in -1.3 events

Answer 11

a or d I think

Answer 12

c or b I think

Answer 13

I can't erase the a or d post

Answer 14

Phi was telling you to focus on the slope, which you said was 0.5 and up

Answer 15

which answer has an increasing slope of 0.5

Answer 16

b

Answer 17

Yes b

Answer 18

Do you understand why?

Answer 19

Thank you I fann and medal you and yes because the line is increasing and that line is a positive slope 0.5

Answer 20

Yes as the age increases along the x-axis, the events increase along the y axis.