Algebra One Two-Variable Statistics

To create an equation when given two points you will need to make a List & Spreadsheet, Data & Statistics, Menu 4,6,1. Don't forget to turn the fractions into decimals by typing the fraction and pressing CTRL Enter.

• F

• G

• H

• J

Tags

AI.9.2.B

Remember equations are written as y=mx+b. Create the equation by finding the slope from rise/run and the y-intercept by looking at where it crosses the y-axis. You can also create an equation by making a List & Spreadsheet, Data & Statistics, Menu 4, 6, 1.

• A

• B

• C

• D

Tags

AI.9.2.C

Remember equations are written as y=mx+b. Create the equation by finding the slope from rise/run and the y-intercept by looking at where it crosses the y-axis.

You can also create an equation by making a List & Spreadsheet, Data & Statistics, Menu 4, 6, 1.

• F

• G

• H

• J

Tags

AI.9.2.C

• A

• B

• C

• D

Tags

AI.9.2.D

To create a SLOPE-INTERCEPT FORM equation, start by creating a T-CHART on your paper and writing y=mx+b on both sides. Then, because it says PARALLEL, that means these equations will have the same slope so you can use the 1.2 given to you and plug it into both equations. Then, use the point (5, 0) which is written as (x, y) and plug it into the first equation. Then, solve for b using Menu 3, 1. Once you find the b, plug it into the second equation.

• A

• B

• C

• D

Tags

AI.9.2.E

Remember RATE OF CHANGE means SLOPE. Find the slope by using RISE/RUN or using List & Spreadsheet, Data & Statistics, Menu 4,6,1.

• A

• B

• C

• D

Tags

AI.9.3.B

Graph the given equation on a GRAPH PAGE and check which answer choice matches. Make sure to use MENU, TRACE, GRAPH TRACE and match the x-intercept.

• F

• G

• H

• J

Tags

AI.9.3.C

The regression line equation for this date is y = 1.4x + 47. What does the y-intercept represent in this scenario?

• Students studied an average of 47 minutes

• Students scored an average of 47 points when they studied

• Students earned 1.4 more points when studying

• Students who studied 0 minutes, earned an average of 47 points.

What is another name for any trend line, or line of best fit, through the points on a scatter plot?

• Correlation

• Interpolation

• Slanted Line

• Regression Line

Given this regression line information in Desmos, what is the equation of the regression line?

• y = 0.9499x

• y = 3.2x + 28

• y = 0.95x + 0.90

• y = 28x + 3.2