An athlete collected information on different brands of nutrition bars. she made a table showing the number of calories and the
amount of protein in each bar.
the correlation coefficient for the data is approximately 0.92. select all that apply
A)There is a strong positive correlation between the calories and grams of protein.
B)There is a strong negative correlation between the calories and grams of protein.
C)As calories increase in food, protein also increases.
D)All the bars are high in protein in relation to calories.
E)There appears to be no correlation between calories and grams of protein.
the correlation coefficient for the data is approximately 0.92. select all that apply
A)There is a strong positive correlation between the calories and grams of protein.
B)There is a strong negative correlation between the calories and grams of protein.
C)As calories increase in food, protein also increases.
D)All the bars are high in protein in relation to calories.
E)There appears to be no correlation between calories and grams of protein.
1 answer:
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Refer to the diagram shown below.
The directrix is y = -4 and the focus is (-2, -2).
Therefore the vertex is at (-2, -3).
Consider an arbitrary point (x,y) on the parabola.
The square of distance from the focus to the point is
(x+2)² + (y+2)²
The square of the distance from the point to the directrix is
(y+4)²
Therefore
(y+4)² = (y+2)² + (x+2)²
y² + 8y + 16 = y² + 4y + 4 + (x+2)²
4y = (x+2)² - 12
y = (1/4)(x+2)² - 3
Answer:
The directrix is y = -4 and the focus is (-2, -2).
Therefore the vertex is at (-2, -3).
Consider an arbitrary point (x,y) on the parabola.
The square of distance from the focus to the point is
(x+2)² + (y+2)²
The square of the distance from the point to the directrix is
(y+4)²
Therefore
(y+4)² = (y+2)² + (x+2)²
y² + 8y + 16 = y² + 4y + 4 + (x+2)²
4y = (x+2)² - 12
y = (1/4)(x+2)² - 3
Answer: