Find the slope, if it exists, of the line containing the pair of points (-2, -10) and (-13, -12)
The slope m = ? Simplify your answer type an integer or a fraction, type N if the slope is undefined.

Use the intercepts to graph the equation x - 5 = y
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Find an equation of the line having the given slope and containing the given point
m = 6, (9,2) The equation of the line is y = ? Simplify your answer, use integers or fractions for any numbers in the expression.
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Find an equation of the line containing the given pair of points (-5,-7) and (-2,-9)
The equation of the line is y = ? Simplify your answer, use integers or fractions for any numbers in the expression.
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Media services charges $40 for a phone and $30/month for its economy plan, find a model that determines the total cost, C(t), of operating a media services phone for t months. C(t)= ?
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The table lists data regarding the average salaries of several professional athletes in the years 1991 and 2001.

a) Use the data points to find a linear function that fits the data.

b) Use the function to predict the average salary in 2005 and 2010

Year Average salary
1991 $253,000
2001 $1,360,000

A linear function that fits the data is S(x) = ? (Let x = the number of years since 1990, and let S = the average salary x years from 1990.)
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In 1920, the record for a certain race was 45.2 sec. In 1940, it was 44.8 sec.,
Let R(t) = the record in the race and t = the number of years since 1920.

a) Find a linear function that fits the data.

b) Use the function in (a) to predict the record in 2003 and in 2006.

c) Find the year when the record will be 43.3 sec

Find a linear function that fits the data R(t) = ? (Round to the nearest hundredth)
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In 1991, the life expectancy of males in a certain country was 68.9 years, In 1998 it was 72.1 years. Let E represent the life expectancy in year t and let t represent the number of years since 1991. The linear function E(t) that fits the data is E(t) = ?t + ? (Round to the nearest tenth)