The sterplot shows the relationship between two variables, x and y . A line of best fit is also shown.

Question

The sterplot shows the relationship between two variables, $x$ and $y$ . A line of best fit is also shown.

Which of the following equations best represents the line of best fit shown?

Accepted Answer

Choice A is correct. The line of best fit shown intersects the y -axis at a positive y -value and has a positive slope. The graph of an equation of the form y = a + b x , where a and b are constants, intersects the y -axis at a y -value of a and has a slope of b . Of the given choices, only choice A represents a line that intersects the y -axis at a positive y -value, 2.8 , and has a positive slope, 1.7 . Choice B is incorrect. This equation represents a line that has a negative slope, not a positive slope. Choice C is incorrect. This equation represents a line that intersects the y -axis at a negative y -value, not a positive y -value. Choice D is incorrect. This equation represents a line that intersects the y -axis at a negative y -value, not a positive y -value, and has a negative slope, not a positive slope.

Question the-st