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The height a plant grew varied directly with the number of days the plant was exposed to sunlight. What is the equation for this direct variation?

A) y = 1.09x
B) y= 1.09 + x
C) y = x - 1.09
D) y = 1.09/x

The height a plant grew varied directly with the number of days the plant was exposed-example-1
User NullNoname
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2 Answers

5 votes

Answer:

A.y=1.09x

Explanation:

User Wallie
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3 votes
Days exposed to sunlight: 3 4 5 6
Height in inches: 3.27 4.36 5.45 6.54

Days exposed to sunlight is the x in the equation. While height is the y in the equation. K is the constant of variation.

y = kx ; k = y/x

3.27 / 3 = 1.09
4.36 / 4 = 1.09
5.45 / 5 = 1.09
6.54 / 6 = 1.09

The equation for the direct variation is: y = 1.09x CHOICE A.
User Tim Pesce
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