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GuDViN [60]
3 years ago
13

What is the y-intercept of f(x) -(1)? A. (1,0) B.(1 1/4) C. (0,0) D. (0,1)

Mathematics
1 answer:
Nataly [62]3 years ago
7 0

Y intercept is where our x variable is equal to 0 and where the graph touches the y-axis.

Therefore, you can get the y intercept by just plugging in x = 0. For example, in the linear function: f(x) = 2x + 3, our y intercept would be (0,3) because we just set our x value equal to 0.

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In a class of 25 students, 24 of them took an exam in class and 1 student took a make-up exam the following day. The professor g
gavmur [86]

Answer:

The  value is   \mu_n  =  73.6

Step-by-step explanation:

From the question we are told that

   The total number of students is  N =  25

    The  number of student that took exam in class is  n  = 24

    The number that took make up exam is  k  =  1

     The  average score of the first 24 students is  \mu  =  74

       The  standard deviation is \sigma  =  8.9

      The  average score of the student who took make up test is \= x  =  64

Generally the new average is mathematically represented as

      \mu_n  =  \frac{( n * \mu ) +  \= x }{N}

      \mu_n  =  \frac{( 24 * 74 ) +  64 }{25}

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7 0
3 years ago
If f(x) = 7x-6, which of the following is the inverse of f(x)?
Harman [31]

Answer:

f^{-1}(x) = \frac{x+6}{7}

Step-by-step explanation:

Let y = f(x) and rearrange making x the subject, that is

y = 7x - 6 ( add 6 to both sides )

y + 6 = 7x ( divide both sides by 7 )

x = \frac{y+6}{7}

Change y back into terms of x, hence

f^{-1}(x) = \frac{x+6}{7}

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Step-by-step explanation:

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64% of the students bring cameras...
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