What time is 13 hours past 1:00 a.m.?
2 answers:
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Answer:
f(-3) = -20
Step-by-step explanation:
We observe that the given x-values are 3 units apart, and that the x-value we're concerned with is also 3 units from the first of those given. So, a simple way to work this is to consider the sequence for x = 6, 3, 0, -3. The corresponding sequence of f(x) values is ...
34, 10, -8, ?
The first differences of these numbers are ...
10 -34 = -24
-8 -10 = -18
And the second difference is ...
-18 -(-24) = 6
For a quadratic function, second differences are constant. This means the next first-difference will be ...
? -(-8) = -18 +6
? = -12 -8 = -20
The value of the function at x=-3 is -20.
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The attachment shows using a graphing calculator to do a quadratic regression on the given points. The graph can then be used to find the point of interest. There are algebraic ways to do this, too, but they are somewhat more complicated than the 5 addition/subtraction operations we needed to find the solution. (Had the required x-value been different, we might have chosen a different approach.)
The coordinates of the midpoint of the segment joining the two points (0, 2) and (6, 4) is (3, 3)
<h3><u>Solution:</u></h3>Given that two points are (0, 2) and (6, 4)
To find: coordinates of the midpoint of the segment joining the two points
<em><u>The midpoint of line joining two points is given as:</u></em>
For a line containing two points and
In the given sum, two points are (0, 2) and (6, 4)
Substituting the values in given formula,
Thus the required midpoint is (3, 3)