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Y and x have a proportional relationship, and y = 12 when x = 5. What is the value of y when x = 8? Enter your answer in the box.

Y and x have a proportional relationship, and y = 12 when x = 5. What is the value of y when x = 8? Enter your answer in the box.
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Y and x have a proportional relationship, and y = 12 when x = 5. What is the value of y when x = 8?

Enter your answer in the box.

User Edward Young
by
8.5k points

1 Answer

2 votes
y = kx <-- direct variation

Step 1: find k by plugging in given x and y and then solving.
12 = 5k
12/5 = k
2.4 = k
Step 2: plug in given x and k to find the missing y
y = 2.4 * 8
y = 19.2
User Kwong
by
8.4k points
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