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igomit [66]
3 years ago
7

Please help I don’t know how to do this

Mathematics
1 answer:
mina [271]3 years ago
5 0

Answer:

f(x) = -2x + 7, when x > 1

f(x) = 4x + 1 when x ≤ 1

Step-by-step explanation:

The right side graph passe through points (1,5) and (2,3).  

Hence, the equation of the line  

\frac{y - 5}{5 - 3} = \frac{x - 1}{1 - 2}

⇒ (y - 5) = 2(1 - x)

⇒ y - 5 = 2 - 2x

⇒ y = -2x +7.......... (1)

Now, the left side graph passes through points (1,5) and (0,1)

Therefore, the equation of the graph will be  

\frac{y - 5}{5 - 1} = \frac{x - 1}{1 - 0}

⇒ y - 5 = 4(x - 1)

⇒ y = 4x + 1 ........ (2)

Hence, the equation (1) gives the function in the right side of the given graph which does not include the point (1,5) and extends to the right from this point.

Therefore, f(x) = -2x + 7, when x > 1 (Answer)

Again, equation (2) gives the function in the left side of the given graph which includes the point (1,5) and extends to the left from this point.

Therefore, f(x) = 4x + 1 when x ≤ 1 (Answer)

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How do you do this??
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2 years ago
Tanzila is selling tickets to the MS127 musical. On the first day of ticket sales she sold 2 adults tickets and 10 child tickets
vekshin1

Answer:

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Step-by-step explanation:

Make a system of equations

2x + 10y = 78

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Solve by elimination, multiply the 2nd equation by -2

2x +10y = 78

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Add the equations

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The price of one adult ticket is $4

Plug 4 in as x to find y

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3 years ago
Which is the value of this expression when a=-2and b=-3
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b=−3

Answer:

a=−2 and b=−3

6 0
3 years ago
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