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Dima020 [189]
3 years ago
9

Y=6x +1 Function rule

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
3 0
F(x)=6x+1 is the answer
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Evaluate the function at the indicated values if possible. If an indicated value is not in the​ domain, say so.
goldfiish [28.3K]

Answer:

f(-7)=0.

f(2)=-9/5.

f(3) doesn't exist because 3 isn't in the domain of the function.

Step-by-step explanation:

f(x)=\frac{x+7}{x^2-9} is the given function.

We are asked to find:

f(-7)

f(2)

f(3).

f(-7) means to replace x in the expression called f with -7:

Evaluate \frac{x+7}{x^2-9} at x=-7

\frac{(-7)+7}{(-7)^2-9}

\frac{0}{49-9}

\frac{0}{40}

0

So f(-7)=0.

f(2) means to replace x in the expression called f with 2:

Evaluate \frac{x+7}{x^2-9} at x=2

\frac{2+7}{2^2-9}

\frac{9}{4-9}

\frac{9}{-5}

\frac{-9}{5}

So f(2)=-9/5

f(3) means to replace x in the expression called f with 3:

Evaluate \frac{x+7}{x^2-9} at x=3

\frac{3+7}{3^2-9}

\frac{10}{9-9}

\frac{10}{0}

Division by 0 is not allowed so 3 is not in the domain of our function.

5 0
3 years ago
Find the area of the trapezoid.
Marrrta [24]

Answer:

22.5

Step-by-step explanation:

the formula is A=a+b

2h

7 0
3 years ago
Read 2 more answers
What is the answer for x-7>-12
Zolol [24]

Answer:

x>-5

Step-by-step explanation:

x-7>-12

Add 7 to each side

x-7+7>-12+7

x> -5

8 0
3 years ago
Read 2 more answers
Hey yall one more <br><br> y-(-99)=4 <br><br> find x please
Artist 52 [7]

Answer:

67766788786686

Step-by-step explanation:

86686868686867

5 0
3 years ago
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Which quadratic function represents the widest parabola? A) f(x) = 5x2 B) f(x) = 1 5 x2 C) f(x) = 2 3 x2 D) f(x) = 3 2 x2
svetlana [45]

Answer:

Step-by-step explanation:

if you use a graphing calculator you we see that the smaller the leading coeffient the wider the parabola.

or use a table and plug in values for y for each x

  y =        x²          5x²            15x²  

x = 1         1             5               15

x = 2        4           20              60

       y is larger for a larger  ax²   a coeffient  

       so the is more narrow for a higher coeffient

f(x) = 5x²  has the smallest coeffient so the widest parabola

4 0
3 years ago
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