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
2 answers:
Answer:
The residual of 1 is 0.5.
Step-by-step explanation:
The given function is
Substitute x=1 in the given equation of line, to find the expected or estimated value of the function at x=1.
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
Therefore the residual of 1 is 0.5.
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"They have different slopes but the same y-intercept, so they have one solution" is the statement which best describes the two lines.
Answer: Option D
<u>Step-by-step explanation:</u>
Given equations:
As we know that the slope intercept form of a line is
y = m x + c
So, from equation 1 and equation 2 we can see that
So, from the above expressions, we can say that both lines have different slopes but have same y – intercept with one common solution when x = 0.