Question

equations of lines of best fit
carol
equations of lines of best fit
use the equation to predict the value for y when x = 20
v =
use the equation to predict the value for x when y = 20
x =
multiple-choice question
which equation could you use to solve for x?
x = -10x + 45
y = -10(20) + 45
20 = -10(x) + 45
20 = -10(20) + 45

Explanation:

Step1: Understand the Goal

We need to find the equation to solve for \( x \) when \( y = 20 \). The line of best fit equation is \( y=-10x + 45 \). To solve for \( x \) when \( y = 20 \), we substitute \( y = 20 \) into the equation.

Step2: Substitute \( y = 20 \)

Substitute \( y = 20 \) into \( y=-10x + 45 \). This gives the equation \( 20=-10x + 45 \).

Answer:

20 = -10(x) + 45 (the second option from the left, or the option with "20 = -10(x) + 45")