Algebra Multiple Choice

posted by .

Hello,

This is the last of questions I have for my practice assignment. Again I will put what I got. Thanks for your help.

1.) Solve the system using substitution. Write answer as an ordered pair.
4x+2y=8
-5x-2=y

A.) First equation (-2,8)
B.) Second equation (-2,8)

I put A

2.) Solve the system using elimination. If the system is linearly dependent, state the general solution in terms of a parameter.

4x-2y+2z=2
-x+y-3z=-4
4x-3y+7z=9

A.) (-1,-7,0)
B.) (3,3,2)
C.) (2z-3, 5z-7, z)
D.) no solution, inconsistent

I got D.

3. Solve using the method of your choice.
y-2^x^2+2x=0
y=4^x+8

A) (4,2^24)
B) (-4, 2^8)
C) (4, 2^24) (-4, 2^8)
D) (4, 2^24) (-4, -2^8)

I got B

  • Algebra Multiple Choice -

    1. From substitution we get 4-2x= -5x-2

    So, 3x = -6, x=-2, so y = 8: (-2,8)

    2. Should be D

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Substitution Method-Plz help

    Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=-4 (y+2) + y = -4 solve for y. Then, x= y+2 i don't get it.How …
  2. HELP!!!!!!!! please!!!!!

    solve the system using substitution {x+2y=11 {3x+2y=13 i just told you how to do the other one; it's the same exact method. solve for x and y. you get: x=-2y+11 and y=(-1/2x)+(11/2). then plug them both back into the original equation …
  3. Algebra

    Two more Algebra questions : Drawing a blank on this one, not sure where to start. Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x + 3y = 12 and passing through (9, -5). I have half …
  4. algebra

    I have a few problems I need you to take a look at and tell me if I arrived at the right answer. 1. I am to use the intercepts to graph the equation x+3y=6 I used the formula y=mx+b using 3 and -6 for x I got these as my ordered pairs …
  5. Algebra-Multiple choice

    Hello, I have some practice math I'm working through and I'm unsure about the answer. I will also put what I got. Thanks for the help. 1. Solve using any method and identify the system as consistent, inconsistent, or dependent. -2x+y=8 …
  6. Algebra help!

    Please help and I would appreciate an explanation as to how you got to the answer. 1.) Solve the system by triangularizing the augmented matrix and using back substitution. 0.09x-0.15y+0.39 -0.18x+0.35y=-0.88 2.) Solve the system by …
  7. Algebra multiple choice!

    I have a few questions I need help with! Please explain if my answer was not right how you got to it. I got 1.) B 2.) A 3.) C 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is …
  8. Algebra Multiple choice revised!! HELP

    I have a few questions I need help with! Please explain if my answer was not right how you got to it. I got 1.) B 2.) A 3.) C 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is …
  9. college algebra need help asap

    Solve the system of equations using substitution. 2x−8y = 2 x+4y = 0 What is the solution?
  10. Stat HW for.

    1. A student taking a midterm exam in Ancient History comes to two questions pertaining to a lecture that he missed, and so he decides to take a random guess on both questions. One question is true-false and the other is multiple choice …

More Similar Questions