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Mathematics 8 Online
OpenStudy (anonymous):

check my answers?

OpenStudy (anonymous):

OpenStudy (anonymous):

@TrojanPoem

OpenStudy (trojanpoem):

First is correct ,

OpenStudy (anonymous):

ok

OpenStudy (trojanpoem):

second (0, 40) (50,20) 20-40/50-0 = -20/50 = -2/5

OpenStudy (trojanpoem):

Personally I don't support taking the last point on the graph in your case (20,2) as It's not clear if its 2 or less (0,1) ( 8,1.5) or (16,2) calculate the slope. using this point 1.5-1 / 8 -0 = 0.5/8 = 1/16 or 2 - 1/16 - 0 = 1/16 just to be sure using two different points.

OpenStudy (anonymous):

ok so for number two the answers for a and b would be (0,40) (50,.20) and 20-40/50-0 = -20/50 = -2/5

OpenStudy (trojanpoem):

I believe so. (the function is decreasing so the slope is negative) I assume in the last graph that the x-axis starts from 10 or there had been some space so (10,0) (50, 30 ) not really sure of this one as there is no grids.

OpenStudy (anonymous):

So for the pairs it should be (10,0) (50,30)

OpenStudy (anonymous):

and is my answer to number three correct?

OpenStudy (anonymous):

@TrojanPoem

OpenStudy (trojanpoem):

I am not sure of the last one.

OpenStudy (anonymous):

np but are the other correct?

OpenStudy (trojanpoem):

Yeah, the only problem in the last is leak of grid. But I assume It will be correct.

OpenStudy (anonymous):

i added grids here and it looks correct http://prntscr.com/9vvj8e

OpenStudy (trojanpoem):

(50, 30) isn't a pair in that crocked grid.

OpenStudy (anonymous):

then whats paired with 50?

OpenStudy (trojanpoem):

Try to add a better grid.

OpenStudy (anonymous):

its a bit higher than 30 http://prntscr.com/9vvmz3

OpenStudy (trojanpoem):

the grid line doesn't look straight.

OpenStudy (anonymous):

I cant get it any straighter

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