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viva [34]
3 years ago
14

Will give brainliest!

Mathematics
1 answer:
yuradex [85]3 years ago
7 0

Answer:

f^{-1}(x) = x/2 +2

Step-by-step explanation:

let f^{-1} (x) = y

then f(y) = x

2y-4 =x

2y =x+4

y= x/2 +2

hence f^{-1} (x) = x/2 +2

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Please help. Write the equation of the graph. (Do not use spaces. Use ^ to represent exponents. Example 2^3 is 23.)
lana66690 [7]
This graph has a horizontal asymptote so it is an exponential graph. It also passes through two points (0,-2) and (1,3). The horizontal asymptote is at y=-3.
The unchanged exponential equation is y=a(b)^x +k
For exponential equations, k is always equal to the horizontal asymptote, so k=-3.
You can check this with the ordered pair (0,-2). After that plug in the other ordered pair, (1,3).
This gives you 3=a(b)^1 or 3=ab. If you know the base the answer is simple as you just solve for a.
If you don't know the base at this point you have to sort of guess. For example, let's say both a and b are whole numbers. In that case b would have to be 3, as it can't be 1 since then the answer never changes, and a is 1. Then choose an x-value and not exact corresponding y-value. In this case x=-1 and y= a bit less than -2.75. Plug in the values to your "final" equation of y=(3)^x -3.
So -2.75=(3^-1)-3. 
3^-1 is 1/3, 1/3-3 is -8/3 or -2.6667 which is pretty close to -2.75. So we can say the final equation is y=3^x -3. 
Hope this helps! It's a lot easier to solve problems like these given either more points which you can use system of equations with, or with a given base or slope. 
7 0
3 years ago
PLS HELP! WILL GIVE BRAINLIST!!!!
neonofarm [45]

Answer:

It is a trinomal because there is 3 terms

It is a quadratic because the highest degree is x^2

All in all, It is a Quadratic Trinomal

Step-by-step explanation:

7 0
2 years ago
(x+2) (y-5)=0<br> please help me graph and solve this!!
viktelen [127]
(X+2)(y-5)=0

X+2=0
X=-2

Y-5=0
Y=5

X is horizontal
Y is vertical
4 0
3 years ago
Combine like terms to simplify the following expressions<br><br> 5y^2 + 7y - 8y^2 - 8y + 11
jenyasd209 [6]

Answer:

-3y^{2} -y+11

Step-by-step explanation:

Collect like terms

-3y^{2} +7y-8y+11

Collect like terms again and you get -3y^{2} -y+11

Hope this helps ʕ•ᴥ•ʔ

4 0
3 years ago
Read 2 more answers
Reagan used 1,221 sq ft of wrapping paper to wrap gifts for everyone in her class. If each gift used the same amount of wrapping
ipn [44]
She used 1221 wrapping paper for 21 gifts, so to find the individual amount, you would do:
1221/21
She used about 58.143 ft² of wrapping paper for each gift.
8 0
3 years ago
Read 2 more answers
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