Suppose f is the function f(x) = |x - 5| + 5 and f : Z -> Z
1 answer:
Answer:
No, function is not one-to-one
No, function is not onto
Step-by-step explanation:
We are given that a function
f:
If function is one-to-one then different x have different image .
Domain =Z
Codomain=Z
When function is onto then range=Codomain
Substitute x=1
Then ,
When substitute x=9
Then , we get
Image of 1 and 9 are same hence, function is not one-to-one.
Negative elements of Z and Zero has no preimage.Therefore, function is not onto.
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Answer:
Step-by-step explanation:
It is known that,
<em>'Vertical stretch, stretches the function up and down towards the y-axis'.</em>
The general form of vertical stretch is given by 'kf(x)', where k>1 is the factor by which function is stretched.
As, we have the function which is stretched by a factor of 4.
Thus, the new function will be .
Hence, the equation for the vertical stretch is .
Solution :
a). The point estimate of proportion of college graduates among women who work at home,
= 0.3281
99.5% confidence interval