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kakasveta [241]
2 years ago
10

What ones are functions and which are not pls help

Mathematics
1 answer:
Fantom [35]2 years ago
6 0
Functions: the chart with number values, the dot graph, and the middle graph on the right

Not functions: the top graph on the left with the vertical line, the graph with the circle, and the bottom right graph

Any graph that doesn’t pass the vertical line test is not a function. You can do this by starting at the top of the graph and drawing a line straight down through what you are testing. If you pass through the line or circle more than once it is not a function.
If you look at the number values if the x value repeats more than once it is not a function.
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100 points!!!
Bogdan [553]

Answer:

(1, 5)

Step-by-step explanation:

The solution to the system of equations is the point of intersection of the two lines.  From inspection of the graph, the point of intersection is at (1, 5).

<u>Proof</u>

The solution to a system of equations is the point at which the two lines meet.  

⇒ g(x) = f(x)

⇒ 3x + 2 = |x - 4| + 2

⇒ 3x = |x - 4|

⇒ 3x = x - 4   and   3x = -(x - 4)

⇒ 3x = x - 4

⇒ 2x = -4

⇒ x = -2

Inputting x = -2 into the 2 equations:

⇒ g(-2) = 3 · -2 + 2 = -4

⇒ f(-2) = |-2 - 4| + 2 = 8

Therefore, as the y-values are different, x = -2 is NOT a solution

⇒ 3x = -(x - 4)

⇒ 3x = 4 - x

⇒ 4x = 4

⇒ x = 1

Inputting x = 1 into the 2 equations:

⇒ g(1) = 3 · 1 + 2 = 5

⇒ f(1) = |1 - 4| + 2 = 5

Therefore, as the y-values are the same, x = 1  IS a solution

and the solution is (1, 5)

8 0
2 years ago
I can add fractions with unlike denominators 3/7 + 1/6 =<br><br><br><br>PLEASE WITH THIS QUESTION ​
gulaghasi [49]

Answer:

25/42

Step-by-step explanation:

first find same denominators

18/42 + 7/42

then add the new fractions

18/42 + 7/42 = 25/42

Hope this helps :)

Have a nice day :)

Can you give me brainliest plz :)

8 0
3 years ago
Read 2 more answers
18. One month, the Taylor family had cash receipts of $876.16. Their excess of cash receipts above cash payments was $56.14. Wha
Valentin [98]

$820.02

Step-by-step explanation:

Since the Taylor family had cash receipts of $876.16 and their excess of cash receipts above cash payments was $56.14.

The total cash payments for the month will be calculated as:

= $876.16 - $56.14

= $820.02

6 0
2 years ago
SOMEONE PLZ HELPPPPP!!!!!
likoan [24]
Answer: Supplementary
7 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%2017%5E%7B1.38077%28x%29%7D%20%3D17" id="TexFormula1" title=" 17^{1.38077(x)} =17" alt=" 17^{
spayn [35]
X = 0.72423357
"Create equivalent expressions in the equation that all have equal bases, then solve for x"


6 0
3 years ago
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