Question

can someone please help me with finding the equation of a best fit line in standard form? i think i have the concept but im sure im doing something wrong

Answer 1

QN?

Answer 2

heres the questions.....For problems 1 and 2, graph the data points. Draw the line of best fit and, using complete sentences, explain how you found it in 3-4 sentences. Write the equation for the line of best fit in standard form.

(10, 150) (20, 275) (30, 340) (40, 400) (50, 475)

Title: Intersection Cars
Horizontal axis: Minutes elapsed
Vertical axis: Total cars passing through


IM currently working out number one and i have worked it out but believe i have error ed

Answer 3

Have u drawn the graph?

Answer 4

Use the equation y=mx+c

Answer 5

yes i have and i see that the points i would have to use are (10, 150) and (50, 475)

Answer 6

the equation im using is m = y2-y1 over x2-x1 to find the slope

Answer 7

then the next equation im using is y - y1 = m (x - x1)

Answer 8

Find m and c where m is the gradient and c is the y-intercept.The gradient of the points should be as far apart as possible and it shd be recommended to use the points from the best-fit line grapg that youve drawn and not the points given ie.:(10, 150) and (50, 475)

Answer 9

for m I get 8.1 which im sure is wrong