Instruction: Find the equation of the relation if y varies directly as x and y = 20 then x = 10.
The equation of the relation is .
Use the formula y=kx.
Thus, y = 2x is the equation of the relation.
The statements:
may be translated mathematically as y=kx where k is the constant of variation.
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DIRECT VARIATION
Instruction: Find the equation of the relation if y varies directly as x and y = 20 then x = 10.
Answer:
The equation of the relation is
.
Solution:
Use the formula y=kx.
Thus, y = 2x is the equation of the relation.
Learn more about direct variation:
The statements:
may be translated mathematically as y=kx where k is the constant of variation.