Answer:
y= <u><em>0.5x + 8.2</em></u>
$<u><em>13.6</em></u> per hour
Step-by-step explanation:
(Is it weird that I had the same exact question? Maybe not. But I also found another person with the same question as me. It was a different question though. This is probably too late. But I'm just gonna try to answer it for anyone who needs it.
<em>"Linear regression"</em> is just a fancy word for <em>scatter plots.</em> Scatter plots take place in graphs. The dots or plots are scattered and the way they are scattered means something. If it's going down, it's negative, up it's positive, and if it's scattered, it has no corrolation.
<u><em>Also, you should have learned this in 9th grade. So, check your notes. </em></u>
<u><em>If you don't have it, WRITE IT!!!</em></u>
To find it in your calculator:
1. Go to "Lists and Spreadsheets"
2. Rename the first column "x" and the second on "y"
3. Write all of your numbers in the right column
- 1, 5, 3, 7 under the "x"
- 8.67, 10.50, 9.58, 11.41 under the "y"
4. Move your cursor to an empty cell
4. Click: "MENU" #4 #1 #3
5. Rename the correct rows "x" and "y" and press enter
6. Now you can find "m" and "b"
7. Then move your cursor to an empty cell and click "doc" "insert" #7
8. Find the x-axis and find "x"
9. Find the y-axis and find "y"
10. Now press "MENU" #4 #6 #1
And you found your y=mx+b: <u><em>y=0.5x+8.2</em></u>
Now, how much money per hour.
So you've found your m and b but now you have to:
1. Replace y with 15 and solve it
- 15=0.5x+8.2
- -8.2 -8.2
- 6.8=0.5x
- Divide 0.5 on both sides
- 6.8/0.5=13.6
- 13.6=x
$<u><em>13.6</em></u> per hour
