Janet is training for a marathon. She decides to track her time per mile, in minutes, for 8 weeks. Which equation best fits the data?
A graph is labeled as Marathon Training. The horizontal axis is labeled as Weeks and the vertical axis is labeled as Time per mile left parenthesis minutes right parenthesis. The values on the horizontal axis range from 0 to 10 in increments of 2 and the values on the vertical axis range from 0 to 10 in increments of 2. Nine points are marked on the graph with their coordinates approximately equal to (0, 10), (1, 9 decimal point 9), (2, 9 decimal point 6), (3, 9 decimal point 5), (4, 9 decimal point 4), (5, 9 decimal point 2), (6, 9), (7, 8 decimal point 7), and (8, 8 decimal point 6).
A.
y
=
0
.
18
x
+
10
.
06
B.
y
=
−
0
.
18
x
+
10
.
06
C.
y
=
2
x
+
8
.
6
D.
y
=
−
2
x
+
8
.
6
So hard to read your posts!
instead of (3, 9 decimal point 5) why not just say (3, 9.5) ? etc
instead of
D.
y
=
−
2
x
+
8
.
6
why not just y = -2x - 8.6
I have no clue what procedure you have learned. Are you going
for a linear approximation, a quadratic or .... ?
ooooooooooohhhhhhhhhhhhhhhh get him Wrieacher!
honestly i think Connections are try there best to prevent copy and paste now in most lessons you cann't copy any more. and i think that the end goal
the the programming was a last second resort for the lessons that don't have this fetcher.
sorry my selling is bad
To determine which equation best fits the data, we can analyze the given points on the graph. We need to find the equation that results in a line that closely passes through these points.
Let's evaluate each option by substituting the x-values from the given points and compare the resulting y-values to the given y-values.
For option A, when x = 0, the equation becomes y = 0.18(0) + 10.06 = 10.06. However, the given point for x = 0 has a y-value of 10, which does not match. This equation does not fit the given data.
For option B, when x = 1, the equation becomes y = -0.18(1) + 10.06 = 9.88. The given y-value for x = 1 is approximately 9.9, which is close enough. Let's check the other points.
When evaluating the other points for option B, we find that the resulting y-values closely match the given y-values. Thus, option B is a good fit for the data.
Therefore, the equation that best fits the data is y = -0.18x + 10.06, which corresponds to option B.
I think these very strange math posts are the result of copying and pasting. Apparently something changed in Connections' website (programming) over last summer, such that students see math explanations and problems normally, but when they copy/paste, this nonsense happens. Students undoubtedly need to learn how to type their own instead of relying on copy/paste.
honestly i think Connections are try there best to prevent copy and paste now in most lessons you can copy any more and i think that the end goal
, the the programming was a last second resort for the lessons that dont have this fetcher.