[C.11] Find Linear Model with two point regression

In this lesson, students learn how to find the function that represents a relationship between two input/output pairs. Using regression, students can quickly and easily find the constant rate of change and initial value without making mistakes or spending too much time on the calculation. With this skill, students can make predictions and solve real-world problems by evaluating and solving using the regression function.

Enter relationship data on your graphing calculator and determine the best fit model function for that relationship using regression (STAT/EDIT, STAT/CALC). Then, use that best fit model function to make predictions by evaluating and solving using the regression function (VARS/Statistics/EQ/RegEQ).

• How do you find a linear model with two point regression using a TI graphing calculator?
• If you are given two ordered pairs, how do you find the equation of the line between the points using a TI graphing calculator?
• How can you use a TI graphing calculator to find the equation of a line between (300, 20.2) and (400, 11.2)?
• How can you do linear regression using lists and STAT > CALC > LinReg(ax+b) in a TI graphing calculator?
• How can you use a TI graphing calculator to find the equation of a line that goes through the point (20, -3.5) with a slope of 10?