Purchase Solution

Equations of lines

Not what you're looking for?

Ask Custom Question

Answer problems on attached word document.

Answer Questions

If possible show work. I have a lot more questions to answer and I need to use examples to work through them.

1. Find the slope for 3y - 1 = 14

2. Find the equation of the line in the form y = mx + b if possible if the line goes through (2, -3) and (-3, 4).

3. Find the equation of the line in the form y = mx + b if possible if the line goes through (0, 5) and it is perpendicular to
8x + 5y = 3

4. Graph: 3x - 5y = 15

5. Graph: x + 2 = 0

6. Supply: For a new diet pill, 60 pills will be supplied at a price of $40, while 100 pills will be supplied at a price of $60. Write a linear supply function for this product.

7. Find the equilibrium price and quantity for the diet pills in exercises 34 and 35. The answer to #35 is

8. Break-Even Analysis. The cost function for flavored coffee at an upscale coffeehouse is given in dollars by C(x) = 3x + 160, where x is in pounds. The coffee sells for $7 per pound.
a. Find the break-even quantity.

b. What will the revenue be at that point?

9. The average new car cost for the years from 1975 to 2000 is given in the table where x is the number of years since 1900?
Year (x) 75 80 85 90 95 00
Cost (y) 6000 7500 12,000 16,000 20,400 24,900

a. Find an equation for the least squares line.
b. Use your equation from part a to predict the average cost of a new car in the year 2005. (x = 105)
c. Find and interpret the coefficient of correlation. Does it indicate that the line is a good fit for the data?
d. Plot the data. Does the scatterplot suggest the trend might not be linear?

10. Find the size of each matrix, find the values of any variables, and identify any square, row, or column matrices.

11. Find 3C + 2A if it exists. Be sure to show any intermediate steps.

12. Find AC if it exists. Be sure to show any intermediate steps.

13. Find ED if it exists. Be sure to show any intermediate steps.

14. Find the inverse of each matrix if it exists.

15. The following system of equations is given.

a. Solve by the echelon method.
b. Solve by the Gauss-Jordan method.
c. Write the system as a matrix equation AX = B
d. Find the inverse matrix A from part C.
e. Solve the system using A-1 from part d.

16. Find the equation of the line in the form y = mx + b if possible if the line goes through (5, -2) and (1,3)

Attachments
Purchase this Solution
Solution Summary

The solution detailed steps on how to solve the equations of lines.

Purchase this Solution
Free BrainMass Quizzes
Probability Quiz

Some questions on probability

Multiplying Complex Numbers

This is a short quiz to check your understanding of multiplication of complex numbers in rectangular form.

Solving quadratic inequalities

This quiz test you on how well you are familiar with solving quadratic inequalities.

Geometry - Real Life Application Problems

Understanding of how geometry applies to in real-world contexts

Graphs and Functions

This quiz helps you easily identify a function and test your understanding of ranges, domains , function inverses and transformations.

View More Free Quizzes
Related BrainMass Solutions

  • Discussion questions on systems of linear equations

    INTERSECTING LINES: If the system of linear equations are not of the above two types then the lines are intersecting lines. That is if neither the equations are of parallel lines nor have same graph then the lines are intersecting lines.

  • Parallel lines and equations

    31124 Parallel lines and equations What is the solution to a system of 2 equations represented by 2 parallel lines in the same plane? There is no solution.

  • Systems of linear equations

    see the attachment This discusses the graphs of equations and the solutions of systems of equations.

  • Analytical geometry problem regarding lines intersections.

    Both triangles have an area of 1. Find the equations of the lines. Answer: Let's solve first the general case of a triangle formed by a straight line that passes through (-4,1) .

  • Solve system of equations and draw the graphs

    the two lines has the value of (4, 2) which solves BOTH equations.

  • Various questions on finite mathematics

    Proof: if the straight lines represented by the equations are nonparallel, then two lines must intersect. The intersection point is the solution of the system. 2. False. Counterexample. Let y=x+1 and y=x+2 be a system of two equations.

  • Algebra for Value Equations

    See attached The expert determines the equations of the two lines from the absolute value equation.

  • Systems of Equations and Single Lines

    129951 Systems of Equations and Single Lines How does a system of lines differ from a single line? What do we mean by 'solution to a system of lines'? Please give an example. Please see the attached file.

  • Algebra

    Equation of the horizontal line passing through the point (-1, 0) is y = 0 Equation of the vertical line passing through the point (-1, 0) is x = -1 The expert writes equations for the vertical and horizontal lines.

  • graphical representation of linear equations

    When you have two lines, one of three things can occur: (1) the two lines will intersect at a single point (that is, at a single (x,y) pair of values) OR (2) the two lines will be parallel and not touch (that is, never intersect), or (3) the two lines

View More Related Solutions