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AnnyKZ [126]
3 years ago
12

What is the domain and range? {(-7,5), (-6,1), (-5,0), (-4,1)}

Mathematics
1 answer:
Monica [59]3 years ago
8 0
The Domain is the first number of the pair
D= -7, -6, -5, -4
The Range is the second number of the pair
R= 5, 1, 0, when a number repeats like the number one you can put it once.


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If f(x) = -7x + 5x2 + 10, what does f(-2) equal?
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Answer:

f(-2) = 44

Step-by-step explanation:

Hello there! Lets get started solving this function!

For a function, whenever we see f(x) = ... , the function is simply asking the value of the equation at x! So, if replace f(x) with f(-2), we simply substitute x with -2 in the equation! Lets get started!

f(x) = -7x + 5x^{2} + 10\\f(-2) = -7(-2) + 5(-2)^{2} + 10\\f(-2) = 14 + 20 + 10\\f(-2) = 44\\

First, we can write the original function. Next, we substitute in -2 for x. Then, we find our final terms. Finally, we are given that f(-2) = 44.

Hope this helps! Remember, math is fun!

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the distance between the points (4,3) and (2,-1)

We apply distance formula

d^2= (x_2-x1)^2 + (y_2-y_1)^2

(x1,y1) is (4,3)

(x2,y2) is (2,1)

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