Y=-9x+4
-9x represents the slope . 4 is the initial value/y-intercept
-10x. All you have to do is subtract -2 from -8 and then put an x there so it’s -10x
Answer:
a) 
b)
Step-by-step explanation:
The sample proportion have the following distribution
Part a
The estimated proportion for this case can be calculated like this:

Part b
In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by
and
. And the critical value would be given by:
The confidence interval for the mean is given by the following formula:
Replacing we got:
Answer: the same length for one of the other two legs.
It doesn't matter which leg since the triangles could be rotated. If the hypotenuse and one leg of one right-angled triangle are equal to the corresponding hypotenuse and leg of another right-angled triangle, the two triangles are congruent.
The answer are
X=3
Wx=29
For Wx
7x+8
So you put the 3 in the x
7x3+8
21+8 =29
Hopefully that makes sense
Good luck
The rest is in attached
You use the formula
Wx = 1/2(uv +st )