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BigorU [14]
3 years ago
13

Explain how you can use the graph of the quadratic function f(x) to solve the equation f(x)=0

Mathematics
1 answer:
Whitepunk [10]3 years ago
6 0
F(x)=0
f(x)=y
so where y=0, the x value is the x in f(x)
basically, where the line crosses or touches the x axis, those ar the x values that make the function true
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Answer:

Jo's age = x = 8 years

Step-by-step explanation:

Let

Jo's age = x

Jo's mother, Anne's age = 4x

In four years time, Anne will be three times as old as Jo.

Jo's age =3( x + 4)

Jo's mother, Anne's age = 4x + 4

How old is Jo?

Equate Jo's age and his mother's age

3(x + 4) = 4x + 4

3x + 12 = 4x + 4

3x - 4x = 4 - 12

-x = - 8

Divide both sides by -1

x = 8

Therefore,

Jo's age = x = 8 years

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3 years ago
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The answer to the first question
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Step-by-step explanation:

Based on the information given in the question, we can form an equation which will be:

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