234 Chapter 2 Linear Equations in Two Variables and Functions 5 4 y 54 3 21 1 2 3 4 5 1 2 3 4 5 x 3 2 1 17. Find an equation for the vertical line that passes through the point (7, 11). 18. Find the slope of the line 5x 2y 10 . 19. State the domain and range of the relation. Is the relation a function? {(3, 1), (4, 5), (3, 8)} 20. Find an equation of the line passing through (1, 4) and parallel to 2x y 6. Write the answer in slope-intercept form. 21. Find an equation of the line passing through y 14 (1, 4) and perpendicular to x 2. Write the answer in slope-intercept form. 22. At the movies, Laquita paid for drinks and popcorn for herself and her two children. She spent twice as much on popcorn as on drinks. If her total bill came to $17.94, how much did she spend on drinks and how much did she spend on popcorn? 23. Write the domain of the function in interval notation. f 1x2 1 x 15 24. A chemist mixes a 20% salt solution with 15 L of a 50% salt solution to get a 38% salt solution. How much of the 20% solution does she use? 25. The yearly rainfall for Seattle,Washington, is 0.7 in. less than twice the yearly rainfall for Los Angeles, California. If the total yearly rainfall for the two cities is 50 in., how much rain does each city get per year? 16. 2y 4 10
miller_intermediate_algebra_4e_ch1_3
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