for an expression or relation to be a function, it must not have any x-coordinate values repeated, let's check this one
What is -3.5 as a fraction
1 answer:
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Answer:
Step-by-step explanation:
Given that x and y are proportional and the equation relating them is
y = rx ← r is the constant of proportionality
To find r use any ordered pair from the table
Using x = 9, y = 4.5 , then
4.5 = 9r ( divide both sides by 9 )
= r , that is
r =