Business Math Applications in the Real World

1) How can you solve for an equation of a line given the following. A. One point and the slope B. Two points C. Slope 2) When graphing a linear inequality. How do you know if the inequality represents the area above or below the line? How do you know if it also represents the points on the line? 3) Why is it true that any two points satisfying a linear equation will give you the same graph for the line represented by the equation? 4) How do you interpret the slope and y intercept in a real world case? 5) When solving a linear inequality, why do you always solve for y? 6) Give an example of a function that you use in your profession.

Solution

Carla week three in-put Page 187 & 188 Write an equation for this line. Use slope intercept form if possible. # 23 y = 3x # 24 y = 2x Write each equation in standard form using only integers. # 41 y = -- 3/5x + 7/10 # 54 y = -- 4x + 1 # 72 Marginal revenue. A defense attorney charges her client $ 4000 plus $ 120 per hour. The formula R = 120n + 4000 gives her revenue in dollars. Page 194 Find the equation of each line. Write each answer in slope intercept form. # 17 the line with slope -6 that goes through (--1, --7) # 18 the line with slope -8 that goes through (--1, --5) # 28 The line through the points (--1, --3)... click for more

By looking at two linear equations, how can you tell that the corresponding lines are parallel, intersecting, or the same line?

1) By looking at two linear equations, how can you tell that the corresponding lines are parallel, intersecting, or the same line? Please give example. 2) Is there a basic difference between solving a system of equations by the algebraic method and the graphical method? Why? 3) Give an example of a system of equations that you use in your profession.

Help with solution

Solve each system by the addition method # 9 x - y = 12 2x + y = 3 # 10 x - 2y = 1 -- x + 5y = 4 # 11 2x - y = 5 3x + 2y = 3 # 12 3x + 5y = 11 x - 2y = 11 # 18 x + y= 13 22x + 36y = 356 Solve each system by the addition method. Determine whether the equations are independent, dependent, or inconsistent. # 19 3x - 4y = 9 --3x + 4y = 12 # 20 x -- y = 3 --6x + 6y = 17 # 23 2x - y = 5 2x + y = 5 # 24 -- 3x + 2y = 8 3x + 2y = 8 Solve each system by the addition method # 28 x y 5 -- -- -- = -... click for more

Need solution to the problems

Solve by graphing, indicate whether each system is independent, inconsistent, or dependent. 1. x + y = 5 x - y = -1 2. y = -x y = -x + 3 Solve by substitution, indicate whether each system is independent, inconsistent, or dependent. 3. x - y = 3 3x - 2y = 3 4. 2x - y = 3 6x - 9 = 3y Solve by the addition method, indicate whether each system is independent, inconsistent, or dependent. 5. -3x + y = 3 2x - 3y = 5 6. 5x - 3y= -20 3x + 2y = 7 Solve each system by the method of your choice. (indicate the method) 7. 3x - 2y = 8 x = -2y 8. 4y = -5x 5x + 8y = 20 Solve. 9. The royal python and the anaconda are the world's longest snakes. The maximum length for e... click for more