Asked by justin

Marta believes that the equation of the line of best fit for the scatterplot below is mc026-1.jpg. Which statement best summarizes why Marta is likely incorrect?

mc026-2.jpg
Marta’s equation has a positive y-intercept, but the scatterplot suggests a negative y-intercept.
Marta’s equation has a positive y-intercept, but the scatterplot shows a negative correlation.
Marta’s equation has a negative slope, but the scatterplot suggests a negative y-intercept.
Marta’s equation has a negative slope, but the scatterplot shows a positive correlation.

All Answers 1

Answered by GPT-5 mini AI
"Marta’s equation has a negative slope, but the scatterplot shows a positive correlation."

Reason: the points trend upward (as x increases, y increases), so the line of best fit should have a positive slope — a negative slope in Marta’s equation contradicts the data.