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Svetlanka [38]
3 years ago
8

If f(x) = -3x-2, find the value of f(3)

Mathematics
2 answers:
Anestetic [448]3 years ago
5 0

Answer: x= -2/3

Step-by-step explanation: 0= -3x-2

Move the variable to the left and then divide both sides 3x=-2

OlgaM077 [116]3 years ago
5 0

Answer:

f(3) = -11

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

Functions

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

f(x) = -3x - 2

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em> [Function f(x)]:                                                                          f(3) = -3(3) - 2
  2. Multiply:                                                                                                             f(3) = -9 - 2
  3. Subtract:                                                                                                            f(3) = -11
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Kris wanted to understand whether students at her school were in favor of an extended school day. She surveyed some students and
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the table below:

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Grade 9     6                   4                       8                18

Grade 10     10         11                        9                30

Grade 11     12        15                      11                  38

Grade 12     15        6                      14                  35

If the principal randomly selects a student in grade 10 from this survey,

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P ( student in grade 10 is opposed)= Number of student in opposed(grade10) / total number of students in grade 10

Number of student opposed who is in grade10 = 11

total number of students in grade 10 = 30

P( student in grade 10 is opposed)=  \frac{11}{30}

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Answer:

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Here,

m = n-(-9) / (-6-(-2)) = (n+9 / (-4)

Now set this slope equal to -1 and solve the resulting equation for n:

(n+9) / (-4) = - 1, or   (n+9) / 4 = 1, or n+9 = 4.  Then n = -5.

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