Answer:
B. y = 17x + 3
Step-by-step explanation:
Here, the given points,
(-3,-40) (1,12) (5,72) and (7, 137),
Since, the equation of a line is,
y = ax+ b
Where,
[tex]a=\frac{n(\sum xy)-(\sum x)(\sum y)}{n(\sum x^2)-(\sum x)^2}[/tex]
[tex]b= \frac{(\sum y)(\sum x^2)-(\sum x)(\sum xy)}{n(\sum x^2)-(\sum x)^2}[/tex]
By the graphing regression tool,
We get,
a = 16.9237 ≈ 17,
b = 2.94068 ≈ 3
Hence, the line of best fit would be,
[tex]y=17x+3[/tex]
OPTION B is correct.
