Urgent! A lot of points!Write the equation of the line of best fit using the slope-intercept formula $y = mx + b$. Show all your work, including the points used to determine the slope and how the equation was determined.
Accepted Solution
A:
Using the red diamond, the light blue triangle, the green circle, and the yellow diamond, the equation can be best answered like this: y = (10/9)x + 55
I drew a line through those points, and I landed on 55 on y-axis I then used Rise/Run to calculate the slope. The yellow diamond is (71.5, 70) so starting at (58, 55), I go up 15 units and ended at (58, 70). I then went 13.5 units to the right and ended at (71.5, 70)
Since we went up 15 and 13.5 to the right, we divide 15 by 13.5 and get (10/9) as the answer.
(10/9) is our slope and 55 is our y-intercept so we plug in the numbers into the equation and get the answer: y = (10/9)x + 55