Question

Michelle uses an electronic device to track the calories she burns while working out. The scatter plot shows the length of her workout and the calories burned.



What is the equation of the graphed linear model?



y = ___ x + ___


http://static.k12.com/calms_media/media/1549000_1549500/1549114/1/6ea9241d3eb547ceddc5ecdd55e73e5fbc366cab/MS_IMC-141014-181218.jpg

Answer 1

@Data_LG2

Answer 2

first pick two points from the graph that the line passes through

Answer 3

45 and 60 @Data_LG2

Answer 4

hmm okay so (45, 500) and (60, 650)

now, the question is asking for the slope (m) and y-int (b) of the line.
let's solve for the slope first. do you know the formula?

Answer 5

60-45/650-600

Answer 6

awesome, but where did you get 600 from?

Answer 7

oh I mean 500

Answer 8

okay :D so if you simplified it what will you get?

Answer 9

I got 10

Answer 10

oh nvm, y should be on top so yeah it's 10

that will be your slope so you have y=10x + b

now let's solve for b
use any of the two points you picked and plug them in y=10x + b

Answer 11

wait that's confusing

Answer 12

y= mx + b, you solved for m

now we're solving for b:

pick any two of the points that you chose awhile ago..

Answer 13

15/150 30/300

Answer 14

nope.. pick one from here (45, 500) or (60, 650)?

Answer 15

45,500

Answer 16

okay so x= 45 , y = 500, m= 10

plug them here: y= mx + b

Answer 17

500=10(45)+b

Answer 18

ohhh so b=50

Answer 19

yes!!! ^_^

Answer 20

so you have y= 10x + 50

Answer 21

thanks you can you help with one more? ill make a new question