surryyy
  • surryyy
Analyze the following graph and select the best match for the slope of the graph. 1/3 3 -1/3 -3 https://static.k12.com/eli/bb/1211/4_68960/2_33573_3_68963/bca78d55b205e10e6421f29b50ced960efb88a1b/media/d7d262058af97602d9effa86fbae1a6e32f4b842/mediaasset_1025083_1.gif
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Nnesha
  • Nnesha
line is increasing or decreasing ?
Nnesha
  • Nnesha
|dw:1440945121141:dw| if line start from 3rd quadrant to 1st quadrant then line would be increasing
surryyy
  • surryyy
oh ok

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Nnesha
  • Nnesha
|dw:1440945214788:dw| if line start from 2nd quadrant to 4th quadrant then decreasing
Nnesha
  • Nnesha
so now look at the graph tell is it increasing or decreasing ?
surryyy
  • surryyy
decreasing
Nnesha
  • Nnesha
yes right if line is decreasing then slope would be negative if line is increasing then slope would be positive
Nnesha
  • Nnesha
slope = rise /run |dw:1440945466511:dw| or you can pick two points to find slope
Nnesha
  • Nnesha
pick two points !
Nnesha
  • Nnesha
two points means (x,y)(x,y) two order pair
Nnesha
  • Nnesha
or you can use the formula `slope=rise/run` to find slope how many units it's going down from the y-intercept and then left ? |dw:1440945748106:dw|
Nnesha
  • Nnesha
|dw:1440945823245:dw| y-intercept is point where line cross y-axis
surryyy
  • surryyy
2?
Nnesha
  • Nnesha
hmm no try again |dw:1440945961436:dw|
surryyy
  • surryyy
3
Nnesha
  • Nnesha
hmm no well let's pick two points |dw:1440946053472:dw| i put 2 red dots what are the x's and y''s values there ?
Nnesha
  • Nnesha
x comes first and then y (x,y)
surryyy
  • surryyy
(1,2)?
Nnesha
  • Nnesha
|dw:1440946397796:dw| it should be (1,-1) remember y values are negative in 4th quadrant
Nnesha
  • Nnesha
what bout the 2nd dot ?
Nnesha
  • Nnesha
dot is on the y-axis thats mean x values would be 0 (0,?) y = ?
surryyy
  • surryyy
(0,2)?
Nnesha
  • Nnesha
yes looks good now use the slope formula to find slope (0,2)(1,-1) \[\huge\rm \frac{ y_2 -y_1 }{ x_2 -x_1 }\]
surryyy
  • surryyy
it would be -3?
Nnesha
  • Nnesha
yes right!
surryyy
  • surryyy
thnx
Nnesha
  • Nnesha
np

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