Question

What is the equation of the trend line? (Round the slope to the nearest hundredth.)



A.
y = -1.38x + 10

B.
y = -0.73x + 10

C.
y = -5.50x + 10

D.
y = -0.18x + 10

Answer 1

@AllTehMaffs can you help me?

Answer 2

Sure ^_^ Do you remember how to find the slope of a line?

Answer 3

no...sorry

Answer 4

so the slope of a line is the "rise over the run" - how far down a line goes divided by how far over a line goes.

\[ m = \frac{y_2-y_1}{x_2-x_1}\]

What are the two ordered pairs that the problem gives?

Answer 5

OH! i remember the slope now! i totally forgot about that formula!1 haha its, 0,10 and 11,2

Answer 6

8/-11 right?

Answer 7

am i way off?

Answer 8

Nope, you're super close! You have the right answer, but y2 and x2 are generally the points that are farthest left, so it'd technically be -8/11 - in this case it doesn't matter because one of the terms is negative either way, but it's good to remember.

Answer 9

no you are spot on

Answer 10

ooops, sorry, the points that are farthest right

Answer 11

Ohhh okay~ so the answer would be B?

Answer 12

Yup yup ^_^

Answer 13

Thanks so much!! i already gave you a medal :3

Answer 14

Thank you much, and nice job!

Answer 15

Thanks ^^