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Anastaziya [24]
3 years ago
15

The following table represents a function.

Mathematics
2 answers:
ivanzaharov [21]3 years ago
6 0
The answer is B. Plug in the x values to check the y values.
netineya [11]3 years ago
4 0

Answer:

<h2>B.</h2>

Step-by-step explanation:

To find the right exponential function, we can just take x-values an replace them into the given functions. The one that give the correct y-values will be the answer.

For x=-2, let's see which function gives y=-\frac{1}{8}

y=8(4)^{x-1} \\y=8(4)^{-2-1}\\ y=8(4)^{-3}\\ y=\frac{8}{4^{3} }=\frac{1}{8}

You can observe that function A is not the correct one, because it gives a positive result. However, function B can actually be the answer, because it woud give the same y-value than A but negative, as we need. Let's see

y=-8(4)^{x-1}\\ y=-8(4)^{-2-1}\\ y=-8(4)^{-3}\\ y=-\frac{8}{4^{3} }=-\frac{1}{8}

Let's evalute for x=0

y=-8(4)^{0-1}=-8(4)^{-1}= -\frac{8}{4}=-2

Which is right.

Therefore, the right answer is B.

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The graph shows the solution for which inequalities?
Helen [10]

Answer:

Inequalities are,

y ≥ 4x + 2

y ≥ 2

Step-by-step explanation:

Solid yellow line of the graph attached passes through two points (0, -2) and (1, 2).

Let the equation of this line is,

y = mx + b

Slope of the line = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

                      m = \frac{2+2}{1-0}

                      m = 4

Y-intercept 'b' = -2

Equation of the line will be,

y = 4x - 2

Since shaded area is on the left side of this solid line so the inequality representing this region will be,

y ≥ 4x - 2

Another line is a solid blue line parallel to the x-axis.

Shaded region (blue) above the line will be represented by,

y ≥ 2

Therefore, the common shaded area of these inequalities will be the solution of the given inequalities.

7 0
3 years ago
If the hikers want to share the fruit evenly , how many Leicester should each person receive?
sveticcg [70]
An even amount each 
EXAMLEE;there are 4 potatoes and 2 people they want to split it evenly so 4potatoes/2people
4 divided by 2
they both get 2 potatoes.
stupid example but hope it helps



6 0
3 years ago
How do you write 0.33 as a percent
Elena L [17]
You would write 0.33 as 33%.

Hope this helps!
5 0
3 years ago
Read 2 more answers
which function rule is represented by the tablex 0 1 2 3y 0 -7 -14 -21a y= 7xb y= -7xc y= x-8d y= 7x-14
salantis [7]

The answer is y = -7x

Expalnation

Two points on the table are (0,0) and (1,-7)

Change in y = -7-0 = -7

Change in x = 1-0 = 1

Slope m of the function = -7/1= -7

Using y= mx + c

Picking point (0,0), x = 0, y = 0

y = mx + c becomes

0 = -7(0) + c

0 = 0 + c

c= 0

Hence, the equation is y = -7x + 0

which is y = -7x

Option b is the correct answer

8 0
1 year ago
An airline states that an airplane flight between two cities takes 2.5 hours. The airline also says that the actual flying time
tatiyna

Answer:

i do not know

Step-by-step explanation:

3 0
3 years ago
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