Find the equation for the family of lines tangent to the circle with center at the origin and radius 3.
1 answer:
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Answer:
Mr. Mole is descending by 2.4 meters per minute
Step-by-step explanation:
Let
x ----> the time in minutes
y ---> the distance in meters
we know that
In this problem the rate of change or slope is the same that the speed
The formula to calculate the slope between two points is equal to
take two points from the table
(5,-18) and (8,-25.2)
substitute the values in the formula
---> is negative because is descending
Answer:
x^2 -1
Step-by-step explanation:
-1×x + -1×1 + x×1 + x×x
= x^2 -x +x -1
= x^2 -1