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Y and x have a proportional relationship, and y = 7 when x = 2. What is the value of x when y = 21?
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Y and x have a proportional relationship, and y = 7 when x = 2. What is the value of x when y = 21?

User Eckig
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1 Answer

2 votes
try this:
21/7=3
multiply 3x2
x=6
y=21 x=6
or...
7/2=21/x
cross multiply to get 7x=42
divide by 7 and x=6







User Showaltb
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