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Refresher Course Math 1050 and 1060 Practice Problems Set 3 Fall 2007 1.) Complete the ordered pair ( 7) for the equation y , 7 Z9 = 2x —9. 7J7 I_-x 2.) Find an equation of a line with sb e 3 and y-intercept (0,-5). ZZE7 3.) Find the equation of the line through the points (3,4) and (5,-6). Write the equation in slope-intercept form. skre yob )OUfr y-i’3 HS 4.) Find the sbopof the line 4x+5y=l0. y 5 = - J2i — c/)(+IO y $1op 5.) Find the slope-intercept form of the equation of the line that passes through the point (2,-I) and is parallel to the line 2x—3y = 5. (‘I ) (C)f 7 6 y t 3 6.) During 2000, Nike’s net sales were $9.0 billion, and in 2001 net sales were $9.5 billion. Write a linear equation giving the net sales y in terms of the year x. Then use the equation to predict the net sales for 2002. *J1E y ? Iii € - / Page 1 of 3 Jt 1-’€ d /1 121 //j’iT Refresher Course Math 1050 and 1060 Practice Problems Set 3 Fall 2007 7.) Does the equation y 3 + 6x —1 = 4 represent a function? Ye5/ ‘‘ 3 —- 5 ° V. — 8.) Does the equation y 4 — 7x + 5 = 7 7 12 represent a function? x - ( o. ! 9.) Let f(x) a.) f(—3) = c.) = 2 3x — 2x. Find each of the following: / b.) f(t) 6 Z7+ f(x+h) /z ,‘ — f(x) - 3XL+L 3L L h — Page 2of3 / Refresher Course Math 1050 and 1060 Practice Problems Set 3 Fall 2007 —5x+6 x—3 1 10.) Example: Let f(x)= 2 +2 a.) f(—4) x>—3 Find b.) f(—3) c.) f(6) ELLI Example: Use the graph of the functionf given below to answer the following questions. a.) domain L 5, s I I — b.) range 4 3 c.) f(-2) 2 d.) f(0)=0 x -4 -2 -3 -1 5 e.) f(x)=4 whenx=? f.) decreasing iZL) -4 g.) increasing (-/-) U (- H) h.) relative max i.) relative mill -) 11.) Determine whether the function is even, odd, or neither. a.) f(x)=x —5 3 c.) f(x) = 3 x — b.) f(x)=x -f-2x—3 2 5x Page 3 of 3