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Olegator [25]
3 years ago
6

The graph of a function f is shown below. Find f(3)

Mathematics
2 answers:
IrinaK [193]3 years ago
7 0
F(3)  means the value of the function when x = 3
From the graph this is = 1.
Brrunno [24]3 years ago
7 0

Answer:

The value of f(3) is 1.

Step-by-step explanation:

In the graph of f(x),

The input values of f is along x-axis and output value is along y-axis,

In other words,

(x, y) ∈ f

Since, by the graph,

f(x) is passes through the point (3, 1),

i.e. for the input value 3, f gives the output value 1,

⇒ f(3) = 1

Hence, the value of f(3) is 1.

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Solve the simultaneous equations
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Answer:

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

Step-by-step explanation:

Given equations are:

3x+4y=30\ \ \ Eqn\ 1\\3x-y=15\ \ \ \ Eqn\ 2

There are three methods to solve simultaneous equations

  1. Elimination
  2. Substitution
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We will use the elimination method as the coefficients of x in both equations are already same

Subtracting equation 2 from equation 1

3x+4y - (3x-y) = 30-15\\3x+4y-3x+y = 15\\5y = 15\\\frac{5y}{5} = \frac{15}{5}\\y = 3

Putting y = 3 in equation 2

3x-3 = 15\\3x = 15+3\\3x = 18\\\frac{3x}{3} = \frac{18}{3}\\x =  6

Hence,

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

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3 years ago
If the function f(x)=x^3 has the domain {-3, 0, 2, 4}, what is its range?
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Step-by-step explanation:

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3 years ago
if a lady chargers $2.00 for gas and $3.00 per 1/2 hour of work . What is the amount of money she makes in 4 hours ?
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Step-by-step explanation:

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This means we would do 3 x 8

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What does 5/6 mean in math <br> p.s 5/6 in fraction
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