The sum of squared value is the same for population and sample. Variance and standard deviation are different between population and sample due to the difference in the formula.
Answer:
D) b = 3, m = -2/3
Step-by-step explanation:
1. The y-intercept, b, is the coordinate where a line intersects with the y-axis.
- As you can see from the graph, the line intersects the y-axis at (0, 3), so the y-intercept, or b, is 3.
2. Given the information above, we can easily cross of A and C because they don't have their y-intercept as 3.
3. Now, since this line is going downward (or you can say it's a negative line), it's obviously going to have a slope that's negative.
- Since D is the only answer choice with a y-intercept of 3 and a slope of -2/3, D) is the correct answer.
We have the equation
Let's complete the square, to do it let's add and subtract 25 on the right side
Now we can have y in function of x
Now we can already identify the vertex because it's in the vertex form:
Where the vertex is
As we can see, h = 5 and k = -2, then the vertex is
Now we can continue and find the focus, the focus is
We have a = 1/20, therefore
The focus is
And the last one, the directrix, it's
Then
Hence the correct answer is: vertex (5, -2); focus (5, 3); directrix y = -7
Showin that x=p the. The only way that y=q is because the others are the same say x=179 the y has to =1 and then p=179 so q has to equal =1
