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Question the-st

3.4 Two-Variable Data & Models - Line of best fit
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The figure presents a sterplot titled “Size and Sale Price of Houses in Town H.” The x axis is labeled “Size, in thousands of square feet,” and the numbers 0 through 3, in increments of 1, are indied. The y axis is labeled “Sale price, in thousands of dollars,” and the numbers 0 through 400, in increments of 50, are indied. There are 25 data points on the sterplot. The data points begin in the middle left part of the graph, at the point with coordinates zero point 9 comma one hundred ninety. They trend upward and to the right in clusters, ending at the point with coordinates 2.55 comma 350. A line of best fit for the data is not shown in the graph. However, it appears that if a line of best fit were drawn, it would pass through the point with coordinates zero comma one hundred and the point with coordinates 2 point 5 comma three hundred fifty.

The sterplot above shows the size x and the sale price y of 25 houses for sale in Town H. Which of the following could be an equation for a line of best fit for the data?

A.

y equals, 100 x plus 100

B.

y equals, 50 x plus 100

C.

y equals, 100 x

D.

y equals, 200 x plus 100