Respuesta :

MsLiset

Answer:

To see if multiple ratios are proportional, you could write them as fractions, reduce them, and compare them. If the reduced fractions are all the same, then you have proportional ratios.

Step-by-step explanation:

TheSection

Answer:

they are proportional

Step-by-step explanation:

to find if they are proportional, we will take x/y ratios and compare several of them, it will tell us if they are proportional or not and give us the constant of proportionality

x1/y1 = 21/3 = 7/1

x2 / y2 = 70 / 10 = 7 / 1

x3 / y3 = 49 /7 = 7 / 1

Since the x/y ration does not change, they are proportional, which means that whatever the value of y, the value of x will be y multiplied by the constant of proportionality

and the constant of proportionality is 7

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