The table shows how the height of a stack of DVDs depends on the number of DVDs. What is a rule for the height?
2 answers:
Answer: Option 'A' is correct.
Step-by-step explanation:
Since we have given that
Number of DVDs Height
2 18
3 27
4 36
Since there is direct proportion between number of DVDs and height.
We need to find if the number of DVDs is n, then height would be
Hence, the rule for the height for n is h = 9n.
Option 'A' is correct.
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Answer:
We want to graph the inequality:
3x - 2y ≤ 6
The first step is to write this as a linear equation, to do it, we can isolate y in one side of the inequality.
3x ≤ 6 + 2y
3x - 6 ≤ 2y
(3/2)x - 6/2 ≤ y
(3/2)x - 3 ≤ y
or:
y ≥ (3/2)x - 3
Because we have the symbol ≥
The points on the line are solutions, then the first part is to graph the line:
y = (3/2)*x - 3
Next, we have:
y equal to or larger than (3/2)*x - 3
Then we need to shade all the region above that line.
The graph can be seen below.
