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Makovka662 [10]
4 years ago
10

Which ones is a function? thank you!

Mathematics
2 answers:
Lapatulllka [165]4 years ago
6 0

Answer:

1. B

2. A

3. B

Step-by-step explanation:

1. Can be checked using the vertical line test. By placing a vertical line at any x value, there can only be one point at which the line meets a part of the graph.

2. An x value can only correspond to one y value. B is incorrect since the x value of 5 is both -4 and 1 for the y values.

3. Same as above but with x and y charts. A x value can only correspond to one y value. A is incorrect as two of the same x values (2) appears and corresponds to two different y values (5 and 6).

stepan [7]4 years ago
5 0

Answer:

B (first row)

Step-by-step explanation:

(A) is not a function because it fails the vertical line test (the line will intersect the graph in more than one place).

(B) is a function because it passes the vertical line test; the vertical line intersects the graph at only one place.

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The vertex of this parabola is at (-3, 6). which of the following could be its equation?
dimaraw [331]

Option B -  y=-3(x+3)^2+6

Step-by-step explanation:

Step 1:

The equation of any parabola in the standard form with vertex at the origin is y^2 = 4ax  . When it opens upward, the equation would be x^2 = 4ay

When the vertex is shifted to a point other than the origin, the equation would be

(x-h)^2 = 4a(y-k)

Step 2 :

Given that the vertex of the parabola is at  (-3, 6). We will have the x and y co-ordinate shifted with this value.

So the equation of the parabola will have x and y shifted to x-(-3)) and y-6

=> x+3 and y-6

Step 3:

Based on the above 2, we can see that option B  y=-3(x+3)^2+6 could be the equation of the parabola.

4 0
3 years ago
I need help with how you get the answers broken down so I can understand and know for future reference.
Goryan [66]
24 shows that they're counting by 5's so recognize what theyre counting by next time, also since there is a hundredths place in 23 the lowest number which would be E had .701 which was least because it had the 1 and the hundredths spot
7 0
3 years ago
A line has a slope of -3 and passes through the point (-3, 8). What is the equation of the line?
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Answer:

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Step-by-step explanation:

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sergij07 [2.7K]

Answer:

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Step-by-step explanation:

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Please I’m in some need of help lol
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