The general form of a parabola when using the focus and directrix is:
(x - h)² = 4p(y - k) where (h, k) is the vertex of the parabola and 'p' is distance between vertex and the focus. We use this form due to the fact we can see the parabola will open up based on the directrix being below the focus. Remember that the parabola will hug the focus and run away from the directrix. The formula would be slightly different if the parabola was opening either left or right.
Given a focus of (-2,4) and a directrix of y = 0, we can assume the vertex of the parabola is exactly half way in between the focus and the directrix. The focus and vertex with be stacked one above the other, therefore the vertex will be (-2, 2) and the value of 'p' will be 2. We can now write the equation of the parabola:
(x + 2)² = 4(2)(y - 2)
(x + 2)² = 8(y - 2) Now you can solve this equation for y if you prefer solving for 'y' in terms of 'x'
Answer:
bbbbbbbbbbbbbbbbbbbbbbbbb
Step-by-step explanation:
Answer:
m<10
Step-by-step explanation:
Inequality is used to show comparison between two values. It helps to determine which is
• Greater than (>),
• Less than (<),
• Equal to(=),
• Not equal to,
• Greater than or equal to,
• Less than or equal to.
• Greater than is used when one value is more than the other.
• Less than is used when a value is less or smaller than another value.
• Equal to is used when both values are the same.
• Not Equal to is used when both values are not the same
Let Ken marbles= m
Remember that Ken's marbles is fewer than Joe's, that is less than Joe's marbles.
The inequality will be
m<10
P=6
You minus the 7 from 25 and you get 18 then you divide 18 from 1/3
Answer:
What is the figure?
Step-by-step explanation:
