Question

Manny created a scatter plot and drew a line of best fit, as shown.

720
-18
-16
-14
+12
+10
-6
-2
2.
6
8
10
12
14
16
+++
18 20
What is the equation of the line of best fit that Manny drew?

Answer 1

y = 2x + 7

Explanation:

Answer 2

y = 2x + 7

Explanation:

Slope Formula:
`m=(y_2-y_1)/(x_2-x_1)`

Slope-Intercept Form: y = mx + b

We are only focusing on the line of best fit.

Step 1: Find 2 coordinates

(0, 7) y-intercept

(2, 11) random

Step 2: Find slope m

m = (11 - 7)/(2 - 0)

m = 4/2

m = 2

y = 2x + b

Step 3: Rewrite linear equation

y = 2x + 7