What is the equation's slope and y-intercept according to the display?
Correct Equation: y=- 4.47x+23.16 Explanation: a and b has been interchanged
Practice makes perfect
We are asked to find and correct the error in the given interpretation of a calculator screen. We will first create the line of best fit ourselves. Then we will describe the error.
Creating a Line of Best Fit
Let's consider the graphing calculator display.
We will substitute the values of a and b into the equation y= ax+ b to find the equation of the line of best fit.
y= - 4.47x+ 23.16
Describing the Error
The written equation has interchanged the values of a and b. According to the display, we have a= - 4.47 and b= 23.16. The coefficient of x should be - 4.47 and the constant 23.16.
