Fill in the missing numbers in the sequence: 0.1, 0.25, 0.4, __, 0.7 ?
1 answer:
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Answer:
The constant of variation is k = -2 ⇒ (B)
Step-by-step explanation:
The equation of the direct variation is y = k x, where
- k is the constant of variation
- The constant of variation k =
The given table has 4 points (-1, 2), (0, 0), (2, -4), (5, -10)
We can use one of the points <em>[except point (0, 0)]</em> to find the value of k
∵ (-1, 2) is a given point
∴ x = -1 and y = 2
∵ k =
→ Substitute the values of x and y in the relation above
∴ k =
∴ k = -2
The constant of variation is k = -2
Answer:
The endpoint, B, is (-7, -8)
Step-by-step explanation:
When I get a problem like this, the first thing I like to do is find the difference between the midpoint and the starting point.
In this problem it would be -5 - -3 = -2 and -2 - 4 = -6.
(-2, -6) is what will help us find the endpoint.
Take the midpoint, (-5, -2), and add those coordinates to it.
-5 + -2 = -7
-2 + -6 = -8
So our endpoint is (-7, -8)
Here is a graph, to help you visualize it.
