Determine whether a linear model might fit the data.
Math Proficiency. The percentage of eighth-graders from households with annual income greater than $40,000 who are proficient in math is increasing. Model the data given in the table below with a linear function. Then estimate the percentage of eighth- graders from households earning more than $40,000 per year who were proficient in math in 2008 and in 2013. Answers may vary depending on the data points used.
Year, x | Percentage of Eighth-Graders from Households with Annual Income Greater than $40,000 Who Are Proficient in Math, y |
2000, 0 | 34% |
2003, 3 | 37 |
2005, 5 | 39 |
2007, 7 | 42 |
2009, 9 | 45 |
Source: Department of Education
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