A line passed through the points (-3,-4) and (6,2). What is the x-intercept of this line?
1 answer:
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ANSWER
The substitution property of equality.
EXPLANATION
We know that:
and that
Since x=5 or 5=x , we can substitute x for 5 wherever we see x in the given equation.
When we do that, we obtain;
This is what we refer to as the substitution property of equality.
9514 1404 393
Answer:
g(x) = x -1
Step-by-step explanation:
Translation of a function by (right, up) = (h, k) is accomplished by ...
g(x) = f(x -h) +k
Here the translation is 4 units left, so h=-4 and k=0. This means ...
g(x) = f(x +4) = (x+4) -5
g(x) = x -1
Answer:
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI
Step-by-step explanation:
The margin of error of a confidence interval is given by:
In which is the standard deviation of the population and n is the size of the sample.
z is related to the confidence level. The higher the confidence level, the higher the values of z, and thus, we wider the confidence interval is.
In this question:
The narrower C.I. is the 95%, and the wider is the 99%. So
(25.53, 37.87): 95% CI
(23.59, 39.81): 99% CI