Question

Here is a scatter plot: y 5 4 3 . 2 1 . 0 1 2 3 4 5 X The graph of what linear equation is a good fit for this data? Oy= - 30+ 2 Oy = -x + 6 Oy= 5x +2 o y = 120 + 6

Answer 1

Take into account that the genereal form of an equation of a line is given by:

y = mx + b

where m is the slope of the line and b the y-intercept.

You can notice that y decreases when x increases. It means that the line has a negative slope.

Moreover, you can notice that the y intercept of the line coudl be b = 2.

Hence, the best linear equation to fit the data is:

y = -1/3 x + 2

because the slope is negative and the y-intercept is 2