Please help ASAP Payton collected data to show the relationship between the number of hours he practices and the number of error

Question

2 days ago

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Please help ASAP Payton collected data to show the relationship between the number of hours he practices and the number of error

s he makes when playing a new piece of music. The table shows his data. Which is the approximate slope of the line of best fit for the data? –5.5 –4.5 –2.0 –1.0

Mathematics

1 answer:

lawyer [9.2K] · Answer 1 · 2026-03-26T02:45:27+03:00

Response:

Option B.

Step-by-step breakdown:

The general equation for the best fit line is

$y=ax+b$

where a indicates the slope and b the y-intercept.

Utilizing a graphing calculator yields a=-4.54762 and b=43.7143. Hence, the equation for the best fit line can be represented as

$y=-4.54762x+43.7143$

Here,

$Slope=-4.54762$

$Slope\approx -4.5$

Note: Alternatively, you can apply the following formula to compute the slope.

$m=\dfrac{\overline{x}\cdot \overline{y}-\overline{xy}}{(\overline{x})^2-\overline{x^2}}$

Accordingly, the correct choice is B.