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Unformatted text preview: form. That follows as2 x + 7 y = 9 7 y = 2 x + 9 y = 2 7 x + 9 7 , Math 111I Sec 001 Group Quiz 2 and 8 x4 y = 94 y =8 x + 9 y =84 x9 4 y = 2 x9 4 . Now because 2 6 =7 2 we have that our two lines cannot be perpendicular. 3. Determine whether the following data is linear. If it is linear, nd the function and write your answer in the form y = mx + b . If the data is not linear then state that. x y5 84 53 2217 Solutions. It is easy to compute the average rates of change for every interval m [5 ,4] ,m [4 ,3] ,m [3 ,2] , and m [2 , 0] . For example m [4 ,3] = 524(3) =3 . But more importantly the tricky value to compute is m [2 , 0] =1(7)2= 62 =3 . So we have that our function is linear with a slope of m =3, and we are given the yintercept as (0 ,7). Thus the equation of our line is y =3 x7 , and we are done....
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 Fall '08
 HITCHCOCK
 Math

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