Practice - McGraw-Hill Higher Education

3-3NAME______________________________________________ DATE______________ PERIOD _____PracticeLinear FunctionsDetermine whether each equation is a linear equation. If so, write the equation instandard form and determine the x-intercept and y-intercept.1. 4xy 2y 9 2. 8x 3y 6 4x 3. 7x y 3 yAlg1 CH03 EP7Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. 8739464. 5 2y 3x 5. 4x 3y 1 6. 5x 2 y 7Graph each equation using any method.7. 1 x y 2 8. 5x 2y 7 9. 1.5x 3y 92OCOMMUNICATIONS For Exercises 10–12, use thefollowing information.A telephone company charges $4.95 per month for longdistance calls plus $0.05 per minute. The monthly cost cof long distance calls can be described by the equationc 0.05m 4.95, where m is the number of minutes.10. Find the y-intercept of the graph of the equation.11. Graph the equation.yx12. If you talk 140 minutes, what is the monthly cost?MARINE BIOLOGY For Exercises 13 and 14, use thefollowing information.Killer whales usually swim at a rate of 3.2–9.7 kilometersper hour, though they can travel up to 48.4 kilometers perhour. Suppose a migrating killer whale is swimming at anaverage rate of 4.5 kilometers per hour. The distance d thewhale has traveled in t hours can be predicted by theequation d 4.5t.13. Graph the equation.OyxCost ($)1412108642OyLong Distance0 40 80 120 160Time (minutes)xLesson 3-314. Use the graph to predict the time it takes the killerwhale to travel 30 kilometers.Chapter 3 23 Glencoe Algebra 1