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If y varies directly as x, and y is 20 when x is 4, whats this relation?

If y varies directly as x, and y is 20 when x is 4, whats this relation?
asked 233k views
5 votes
If y varies directly as x, and y is 20 when x is 4, whats this relation?

asked
User Evgueni
by
8.6k points

1 Answer

2 votes
y α x

y = kx

20 = k*4

20 = 4k

20/4 = k

5 = k

k = 5

Relation is y = kx , that is y = 5x
answered
User Kiquenet
by
7.7k points
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