Question

Are any of these equations for the line of best fit represent data sets that have a positive linear relationship?

y= -0.0025 - 0.8x
y= 88.5 - 8.8x
y= 13.89 - 2.9x

Answer 1

Well, what do you think positive linear relationship means?

Answer 2

that the linear relationshp is positive :P

Answer 3

Here's what it means: When x increases, y increases.

Answer 4

cant i do like y=mx+b and if it is positive it would be a positive relationship

Answer 5

nonne have positive relationship...because the slope of all the lines are negative

Answer 6

@anupam1031 , can you not answer snipe?

Answer 7

@valeria_fl , that's not exactly how it works.

Answer 8

ohh., okay, it was just a guess anyway.

Answer 9

Positive means that when x is increasing, y is increasing. It doesn't have to do with the specific values of x and y, it has to do with *the relationship between x and y*

Answer 10

gotchya.. makes more since like that,,, ositive is positive an negative is negative.

Answer 11

positive*

Answer 12

y= -0.0025 - 0.8x
When x=0, y=-0.0025 right?
When x=1, y=0.0025-0.8 right?
When x increases, does y increase or decrease?

Answer 13

*When x=1, y=-0.0025-0.8 right?

Answer 14

indeed

Answer 15

So, when x increases, does y increase or decrease?

Answer 16

decrease

Answer 17

So, is it a positive or negative relationship?

Answer 18

negative

Answer 19

Good.

Answer 20

y= 88.5 - 8.8x
What about this one?

Answer 21

Ahhh YEAHHH! :) thank you!

Answer 22

:P You do the same thing for every single one, and see what you get.