The vertical line test is simply using a vertical line across the whole graph to see if it touches two points at the same time. This is used because a function can only create ONE output for every input. For example, you can't plug 2 into the function
![x^{2}](https://tex.z-dn.net/?f=%20x%5E%7B2%7D%20)
and get two different answers, you'll only get one, 4. However, you can also plug in -2 to get 4. This is because two different inputs can have the same output, but one input CANNOT have two outputs.
Therefore, if it fails the vertical line test, then it's not a function
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Answer:
Step-by-step explanation:
Compare the given equation to ...
y -k = m(x -h) . . . . . line with slope m through point (h, k)
You find that k = -5, m = 1/2, h = -12.
The point is (h, k) = (-12, 5). The slope is m = 1/2.
Answer:
i think b
Step-by-step explanation:
Convert all to lb and find cost per 1lb
A.
54oz, convert to lb
54/16=3.375lb
find per lb
4.89/3.375=$1.4488888 per lb
B.
2 and 3/4=2.75, 3.91/2.75=$1.42181 per lb
C. 910/453.59=2.00621lb
3.10/2.00621=$1.545 per lb
compare
A: $1.4488888 per lb
B: $1.42181 per lb
C: $1.545 per lb
B is cheapest, followed by A then C
B is best buy
Answer:
3
Step-by-step explanation:
1 1/4 + 1 3/4 = 3. Hope this helps!