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earnstyle [38]
3 years ago
11

The equation for the line of best fit for a data set is y = 2x + 1.5. If the point (1, 4) is in the data set, what is the residu

al of 1?
Mathematics
2 answers:
sdas [7]3 years ago
7 0

Answer:

The residual of 1 is 0.5.

Step-by-step explanation:

The given function is

y=2x+1.5

Substitute x=1 in the given equation of line, to find the expected or estimated value of the function at x=1.

y=2(1)+1.5

y=3.5

The point (1, 4) is in the data set. It means the actual value of the function is 4 at x=1.

The formula to calculate the residual is

Residual = Observed value - Estimated value

The residual of 1 is

Residual=4-3.5=0.5

Therefore the residual of 1 is 0.5.

Andreas93 [3]3 years ago
5 0
A. 0.5 well at least that's the answer in ingenuity.<span />
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1 year ago
What is the solution of 3x + y = 9 and 3x − 5y = 15?
Alinara [238K]
3x+y=9 ....(1)
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-[3x-5y=15]
=> 3x+ y = 9
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..........................
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4 0
3 years ago
Read 2 more answers
A equation for (7,2) and (2,12)
alexira [117]

Well to find this line you want to know the slope and the y-intercept. So find the slope:

(y2-y1)/(x2-x1)

12-2 = 10

2-7 = -5

10/-5 = 2/-1

-2 is your slope

Now for y-intercept, find the point closest to the y-axis. That is the point (2,12), and if your slope is negative 2, that means that if you go up 4 and left 2, you should find the y-intercept:

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So now lets write this out in an equation:

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there you go! hope this helps!

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2 years ago
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