What are to numbers that multiply to make 18 but add up to negative 9
2 answers:
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Answer:
y = 36x
Step-by-step explanation:
Given that y varies directly as x, then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition y = 18 when x = , thus
k = =
= 36
y = 36x ← equation of variation