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3 years ago

A function is defined as, f (x) = -3x^2 + 2x - 5 what is f (-1)

Mathematics

1 answer:

noname [10]3 years ago

6 0

Answer:

The value of f(-1) in the given equation is -10.

Step-by-step explanation:

When we see f(-1), it means that -1 is represented as our value of x. So, knowing this information, we can plug this into our given equation.

f(-1) = -3(-1)² + 2(-1) - 5

Simplify the exponent on -1.

f(-1) = -3(1) + 2(-1) - 5

Multiply -3 by 1.

f(-1) = -3 + 2(-1) - 5

Multiply 2 by -1.

f(-1) = -3 - 2 - 5

Subtract 2 from -3.

f(-1) = -5 - 5

Subtract 5 from -5.

f(-1) = -10

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What is the effect on the graph of the function f(x)=x when f(x) is replaced with -1/2f(x)?

Natasha2012 [34]

Answer:

For negative sign , the graph reflects over x -axis and for 1/2 there will be a vertical compression

Step-by-step explanation:

Parent function is f(x)= x

We need to find the effect of the graph when f(x) is replaced with -1/2f(x)

When negative sign is multiplied outside f(x) like -f(x), then there will be a reflection over x-axis

When negative sign is multiplied inside f(x) like f(-x) then there will be a reflection over y-axis

When a number is multiplied outside f(x) then there will be a vertical stretch or compression

Here 1/2 is multiplied outside f(x). $\frac{1}{2}$ is less than 1 so there will be a vertical compression

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lianna [129]

Answer:

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Step-by-step explanation:

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3 years ago

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yaroslaw [1]

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Step-by-step explanation:

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