SOMEONE PLEASE HELP!! i’ll give brainliest
1 answer:
Answer:
C.
Step-by-step explanation:
We can get the equation in slope-intercept form if we know the slope (m) and the y-intercept (b).
Since the line is parallel to -2x + 4y = 8, it will have the same slope as the equation.
Converting -2x + 4y = 8 into the slope-intercept form, we would have:
4y = -2x + 8
y = -2x/4 + 8/4
y = -½x + 2
Theregore, slope, m, of the line that is parallel bro 4y = -2x + 8 is -½.
To find the y-intercept, b, substitute (x, y) = (-5, -1) and m = -½ in y = mx + b.
Thus:
-1 = (-½)(-5) + b
-1 = ⁵/2 + b
-1 - ⁵/2 = b
(-2 - 5)/2 = b
-⁷/2 = b
b = -⁷/2
To get the equation of the line, substitute b = -⁷/2, and m = -½ in y = mx + b.
The equation would be:
You might be interested in
Answer:
The 95% confidence interval for the proportion of parents that are satisfied with their children's education is (0.4118, 0.4618). 0.5 is not part of the confidence interval, so this represents evidence that parents' attitudes toward the quality of education have changed.
Step-by-step explanation:
We have to see if 50% = 0.5 is part of the confidence interval.
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
95% confidence level
So , z is the value of Z that has a pvalue of
, so
.
The lower limit of this interval is:
The upper limit of this interval is:
The 95% confidence interval for the proportion of parents that are satisfied with their children's education is (0.4118, 0.4618). 0.5 is not part of the confidence interval, so this represents evidence that parents' attitudes toward the quality of education have changed.