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If y varies directly as x and y = 20 when x = 6, what is the value of y when x = 24? a. 36 b. 80 c. 30 d. 4
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2 votes
If y varies directly as x and y = 20 when x = 6, what is the value of y when x = 24?

a.
36
b.
80
c.
30
d.
4

User Francesco Napolitano
by
5.7k points

2 Answers

3 votes

Answer:

B. 80 is correct

Explanation:

User Nubia
by
5.9k points
3 votes
The equation of that is y=kx
Substitute it in and you get
20=6k
Divide 6 on both sides
k=3 1/3
Then since it asks what is the value of y when x is 24 use k in the equation
y=3 1/3*24
so y=80 is the answer
User Rick Roberts
by
6.6k points
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