How do you evaluate the function with the given values of x: f(x)=4x x=2, x=1/2?

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How do you evaluate the function with the given values of x: f(x)=4x x=2, x=1/2?

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Answer 1 · 2015-09-18T05:50:10

Put the values of x in the function, f(x) to get the values of y.

Explanation:

Given, $f (x) = 4 x$ $f(x)=4x$
Now, remember , always take the small values first.
When $x_{1} = \frac{1}{2}$ $x_1=\frac{1}{2}$ ,
$y_{1} = f (x_{1}) = 4 \times \frac{1}{2} = 2$ $y_1=f(x_1)=4\times\frac{1}{2}=2$

Again when $x_{2} = 2$ $x_2=2$
$y_{2} = 4 \times 2 = 8$ $y_2=4\times 2=8$

Now put the two points $($ $($ $\frac{1}{2}$ $\frac{1}{2}$ , $2)$ $2)$ and $(2, 8)$ $(2,8)$ in your graph paper.
Finally draw a straight line intersecting the points .

......And you've done it!

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How do you evaluate the function with the given values of x: f(x)=4x x=2, x=1/2?

1 Answer

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