Colleen is knitting a scarf. For every 45 pieces of blue yarn she uses, she uses 18 pieces of red yard. What equation can be used to represent the proportional relationship between the amount of blue yarn,

Colleen is knitting a scarf. For every 45

pieces of blue yarn she uses, she uses 18
pieces of red yard. What equation can be used to represent the proportional relationship between the amount of blue yarn, b
, and red yard, r
, that Colleen uses when knitting a scarf?

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Colleen is knitting a scarf. For every 45 pieces of blue yarn she uses, she uses 18 pieces of red yard. What equation can be used to represent the proportional relationship betw…

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