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Mathematics 24 Online
OpenStudy (anonymous):

Does this table show a proportional relationship between x and y

OpenStudy (anonymous):

|dw:1428954500703:dw|

OpenStudy (anonymous):

@Ashes.boom

OpenStudy (ashes.boom):

I was just looking at this but i dont remember what the answer was... i would say take y and divide by x and see if the numbers are the same to start

OpenStudy (anonymous):

ok well thank you for tryin :)

OpenStudy (anonymous):

@GreenCat

Mehek (mehek14):

to see if it's proportional you have to see if the rate of change is constant

OpenStudy (anonymous):

ok but how do I do that?

Mehek (mehek14):

you use the formula: \(\dfrac{y_2 - y_1}{x_2 - x_1}\)

Mehek (mehek14):

lets use the points 1,5 and 3,12

Mehek (mehek14):

\(\Large\dfrac{12-5}{3-1}\)

OpenStudy (anonymous):

ok so the next one would be 7 over 2?

Mehek (mehek14):

simplify \(\dfrac{7}{2}\)

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