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Answer: Option A and Option D
Step-by-step explanation:
By definition the general equation of a circle has the following form
Where r is the radius and the point (h, k) is the center of the circle
All points that are on the x axis have the following form:
(h, 0)
Therefore all the circles that have their centers on the x axis will have a value of k = 0.
Identify among the options all those equations that have a value of k = 0
The circles that have their center on the x axis are option A and option D
Answer:
The constant of proportionality is 0.5
Step-by-step explanation:
We are given the following in the question:
Cost of 25 game tickets = $12.50
Cost of 35 game tickets = $17.50
The cost of ticket C(n) is directly proportion to the number of tickets n.
Thus, we can write:
where a is the constant of proportionality.
Putting values, we get,
Thus, the constant of proportionality is 0.5