The function f(x) is shown in the graph. What is the equation for f(x)?
1 answer:
It's a linear graph, so we can use the slope-intercept form. Let's find the y-intercept first, which happens ar y = -3. Now let's find the slope. To do so, let's pick two points on the graph (relatively easy ones): (0, -3) and (5, -7).
Let's find the slope:
Let's write it in slope-intercept form. Recall that slope-intercept form is:
Where m = slope and b = y-intercept. We have all the parts, so let's write it:
Let's find the slope:
Let's write it in slope-intercept form. Recall that slope-intercept form is:
Where m = slope and b = y-intercept. We have all the parts, so let's write it:
You might be interested in
Answer: A. 0.50
Step-by-step explanation:
The formula to find the sample size :
, where p= Prior estimate of population proportion.
E= Margin of error
z* =Critical z-value.
When , we do not have prior estimate of population proportion , we use p= 0.5 because at p=0.5 it gives the maximum same sample size for the corresponding confidence interval and margin of error.
Therefore , the conservative value for n can be obtained by using p=0.50.
Therefore , the correct answer is A.0.50 .