d. What do the slope and C-intercept represent in this scenario? 1 e. The Canada Food Guide suggests that a 16-year-old male with a sedentary lifestyle should consume about 2 300 calories per day. Use the linear equation to determine the number of additional quarter slabs a 16-year-old male could eat and still stay below the daily recommendation (assuming the male does not eat anything else that day)? 1 f. Use the recommended caloric intake to state the domain and range of the relation from parte. Alternative Education 20176. Tayler claims that when a linear equation is written in general form, Ax + By + C = 0, the x-intercept of the corresponding graph is always - A 1 Show that Tayler's claim is true for the equation 3x + 5y + 45 = 0. 1 b. Explain why -represents the x-intercept. (Hint: What y-value can be substituted into Ax + By + C = 0 to determine the x-intercept?) 1 c. Tayler's claim is not true for horizontal lines. Explain why. Alternative Education 2Lesson 8.1 Systems of Equations and Graphs 2 4. Use technology to determine an approximate solution to the system y - 0.44x + 12.6 ap y =-7.21x - 55.6. Explain the procedure. 2 5. YA and yB represent continuous linear relations. Some values from the relations are shown in the table below. x YA YB -8 -5 -15 -3 6 -11 Solve the system.2 . the systems. Write a system of equations to model each of the following situations. You do not need to solve a. One website charges $0.99 per song download. Another website charges a one-time user fee of $12, but only charges $0.89 per song download. b. Sean operates a lawn-cutting business. He charges $15 for a single lawn and $25 for a front and back lawn. Sean made $475 from 25 customers. Thinkstoc c. Brass is an alloy made by melting and mixing copper and zinc. A metallurgist has two bras alloys, one that is 65% copper and one that is 90% copper. He would like to combine a portion of each alloy to produce 500 g of a new alloy that is 75% copper.or (2 4. State a favourite strategy for solving a linear system of equatic ats instructions for the chosen strategy such that another Math Ive student could easily follow ide step-by-step algebraically. 5. Describe the advantages of verifying solutions to systems of equations graphically and2 1. State the slope and a point on the line y - 18 = 71.3(x + 98). 2 2. Sketch a graph of the relation y + 4 = 2(x -3). Explain the procedure used. Alternative Education 2Nation 1 d. Suggest a similar rule for the y-intercept. Check the rule using 3x + Sy + 45 = 0 e. Will the rule always work? /17