A(n) = -6 - 4(n - 1)
1 answer:
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Answer:
20.2 miles
Step-by-step explanation:
This can be described by the three sides of a right angled triangle. Let the distance of the glider to the airport be represented by x, applying the Pythagoras theorem:
=
+
=
+
576 = + 169
= 576 - 169
= 407
x =
= 20.1742
x = 20.2 miles
The glider has to fly 20.2 miles to return to the airport.
Hey there!
Linear functions have a continuous change.
Let's check these tables and see if we can tell linear functions from non-linear functions.
The first one is
- x values: -1, 0, 1, 2
- we add 1 each time
- y values: 8, 5, 2, -1
- we subtract 3 each time
Let's try the next one:
- x values: -1, 0, 1, 2
- we add 1 each time
- y values: 5, 10, 15, 20
- we add 5 each time
Let's try the third one:
- x values: -1, 0, 1, 2
- - we add 1 each time
- y values: 15, 18, 20, 21
- we add 3, then 2, then 1..
So this table doesn't represent a linear function.
Let's check the fourth one:
- x values: -1, 0, 1, 2
- we add 1 each time
- y values: 1, 2, 3, 4
- we add 1 each time
Thus, Option C is the right option.
Hope everything is clear.
Let me know if you have any questions!
Always remember: Knowledge is power!