Questions on Algebra: Linear Algebra (NOT Linear Equations) answered by real tutors!

Tutors Answer Your Questions about Linear Algebra (FREE)

Question 625338: what are the characteristics of linear funtion

Click here to see answer by rfer(16322)

Question 625859: Could you please help solve this For the given equation, list the intercepts and test for symmetry.
y = -8x^3/x^4 -6
Thanks so much.
Click here to see answer by lwsshak3(11628)

Question 626003: How can I solve 3x+2y=5 & x-2y=4 by using elimination method?
Click here to see answer by Edwin McCravy(20054)

Question 626134: Find the value of k so that the line kx-5y=21 will contain the point (-2,-1).
Click here to see answer by Edwin McCravy(20054)

Question 626137: Find the value of k so that the point (k,k) lies on the line 2x-4y=8
Click here to see answer by jim_thompson5910(35256)

Question 626224: if the hand of the clock is 10 cm long how far will it move within 1 hour

Click here to see answer by Alan3354(69443)

Question 626224: if the hand of the clock is 10 cm long how far will it move within 1 hour

Click here to see answer by Edwin McCravy(20054)

Question 626254: if (a,10) is a point of the graph of y=x^2-3^x, what is a
Click here to see answer by Alan3354(69443)

Question 626564: 1. Find the value of b so that 3x-2y=4 is parallel to 6x+by=12
2. Find the value of c so that x-3y=c will pass through (2,-1)
Click here to see answer by stanbon(75887)

Question 626708: Find an equation for the line with the given properties,express the equation in slope-intercept form.
P=(-3,-5) and Q=(-2,-3)
What is equation line?
Click here to see answer by jim_thompson5910(35256)

Question 626781: Find c so that x-3y=c is not parallel to 2x-6y=10.
Click here to see answer by richwmiller(17219)

Question 626912: y=(x-3)(x-1)
Click here to see answer by ewatrrr(24785)

Question 626970: what is the equation of a line given the two points (2,1) (-2,-1)
Click here to see answer by jim_thompson5910(35256)

Question 627050: What is the Least Common Denominator of 2(3+2x)= 3(x-4)?
Click here to see answer by Edwin McCravy(20054)

Question 627262: what is irrational numbers?

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Question 627331: if bx=c-x,x=?
Click here to see answer by jim_thompson5910(35256)

Question 628239: solve 3-2x>15
Click here to see answer by jim_thompson5910(35256)

Question 628450: Find the coordinates of B given A(4,-2) and M(4,7). M is the midpoint
Click here to see answer by John10(297)

Question 628808: what is 4X^2=25

Click here to see answer by vleith(2983)

Question 628808: what is 4X^2=25

Click here to see answer by Alan3354(69443)

Question 628963: i need help solving nonlinear equations i don't understand
Click here to see answer by solver91311(24713)

Question 629298: Find the quadratic polynomial whose graph goes through the points (−1,5), (0,5), and (2,29).
f(x)= _x2+_ x+_ <<< that form

I got to the step 4a+2b+0=29
that was like my 6/7th step. I am getting stuck from there. Can i get any help please?

Click here to see answer by ewatrrr(24785)

Question 629335:
Express the vector v= [-17] as a linear combination of x = [-2] and y = [-5]
[ 50 ] [ 5 ] [ -6]
v=__x + __ y.
How could I express this?
Click here to see answer by jsmallt9(3758)

Question 629331: Write a vector equation
that is equivalent to the system of equations:
8x +9y -9z = 1
−7x+ 8y -4z=-1
x -3y+z = 2
My book isnt that great and I can not seem to find a way to solve this.
Click here to see answer by Edwin McCravy(20054)

Question 629330: Solve the equation
2x−9y+5z=−1.
in the form
_
|x| [] [] []
|y|= [] +[]s +[]t
|z| [] [] []
-
I have gotten in about 3/4 steps but seem to get stuck. Would appreciate some help.
Thanks!
Click here to see answer by Edwin McCravy(20054)

Question 629321: How do I solve this open sentence if each variable represents a positive integer?
2x+3y is less than or equal to 12

Click here to see answer by Edwin McCravy(20054)

Question 629741: solve 4x+17=25
Click here to see answer by reviewermath(1029)

Question 629316: Solve the system
X1-X2-5x3 = 5 <
6x1-5x2-6x3=6 < all numbers by x should be lower
-2x1 -3x3=38 <
should come in the form
__
x1|
x2|= [blank ]+ [blank] S.
x3|
--
Click here to see answer by jsmallt9(3758)

Question 632878: 3x1-3x2+5x3=6
x1+7x2+5x3=4
5x1+10x2+15x3
Click here to see answer by Alan3354(69443)

Question 633381: 6-2(5x-1)=4x+2(1-x)
Click here to see answer by Maths68(1474)

Question 633491: how do you find the x and y of...
2x+5y=29
2x+3y=23
Click here to see answer by ewatrrr(24785)

Question 633745: Solve the ordered triple of point H. A is (5,0,0) E is (0,0,4) G is (0,3,0) Q is (0,3,4) R is ( 5,3,0) and P is (5,0,4)
Click here to see answer by Edwin McCravy(20054)

Question 635548: Matrices A, B, and C are given by
A= open bracket 3, -2, 4/ 6 1 0/ -5 9 5 close bracket
B= open bracket 1 5 0/ -8 4 7/ 2 3 -9 close bracket
C= open bracket 3 -2 -7/ -4 5 1/ 3 0 6 close bracket
If D=A(2B+3C) find d(subscript) 23
Click here to see answer by jsmallt9(3758)

Question 636177: [(3a+4)+(5a-4)]-[(2a-6)-(7a+9)]
Click here to see answer by stanbon(75887)

Question 636810: I need help with solving x + y = 51
x = # of cell phone model A4
y = # of smartphone Z20
then $35x + $50y = $2220
using substitution, elimination or matrices
then graph
Click here to see answer by ewatrrr(24785)

Question 637538: we are studying quantities.
Why is "distance" not a quantity?
I think distance is not a quantity because you need to have an amount for the distance. Is that right?
Click here to see answer by solver91311(24713)

Question 637541: we are studying quantities.
When you are asked to construct a graph that represents one quantity in terms of another quantity, how do you know which quantity to place as a label on which axes?
Click here to see answer by solver91311(24713)

Question 637934: four-fifths of a number is 10 more than two-third of the number

Click here to see answer by MathLover1(20849)

Question 638105: Find the intercepts for the graph of the equation given.
8x - 3y = 72
The x intercept is
The y intercept is
Please help me out....thank you
Click here to see answer by reviewermath(1029)

Question 639156: Solution for : -1/2(x +4)= 16
Click here to see answer by Tatiana_Stebko(1539)

Question 639278: ((x/(1-x))+((1+x)/x))/(((1-x)/x)+(x/(1+x))
Click here to see answer by MathLover1(20849)

Question 639273: Simplify.
((3/x)-(4/y))/((4/x)-(3/y))
Click here to see answer by radh(108)

Question 639273: Simplify.
((3/x)-(4/y))/((4/x)-(3/y))
Click here to see answer by MathTherapy(10551)

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