1,959 Answered Questions for the topic linear algebra

11/10/13

How many of each kind of ticket were sold?
There were 305 tickets sold for a basketball game. The activity cardholders' tickets cost $1.25 and the non-cardholders' tickets cost $2.50. The total amount of money collected was $578.75. How... more
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Linear Algebra

07/15/13

Find the equation of the line that passes through (-6,5) with the slope of (-2/3)?
Write your answer in Slope-Intercept Form?
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Linear Algebra

04/22/13

cannot understand how to connect g(x) = (x-2)^2 to the correct graph
I'm trying to understand matching functions to their graphs.  I've been given pictures of graphs and four functions.  I am suppose to match each function to the correct graph.
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Linear Algebra

01/20/13

Please, help!
Show that the set V of all 2x2 upper triangular matrices is asubspace of M22 I need to turn this in tonight by 12 pm. Please, help! 
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Linear Algebra

01/19/13

Find the domain and codomain and determine whether T is linear
w1=5x1-x2+x3 w2= -x1+x2+7x3 w3= 2x1-4x2-x3 My solution so far: From the system I can tell that it is R3, so domain is R3, since there w1, w2, w3 I can tell that codomain is R3. Is there a way to... more
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Linear Algebra

01/19/13

Determine whether w is in the range of the linear operator T
T:R3 - R3: T (x,y,z) = (2x-y, x+z, y-z); w= (3,3,0) Here is my solution: T (3,3,0) = (2x3-3, 3+0, 3-0) T (3,3,0) = (3, 3, 3)  What I am doing wrong? And how to explain if it is in the range or... more
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Linear Algebra

01/11/13

Why must the determinant of a matrix with integer entries be an integer?
My answer would be because it involves only addition, subtractions and multiplications, no divisions. But I am not 100%sure. 
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Linear Algebra

01/02/13

what is a straight edge
a sraight line is a line that has a one end point and a arrow that keeps going the other direction
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Linear Algebra

12/28/12

Linear Algebra
. Indicate whether the statement is true or false. Justify your answer.(a) If Ax=b has infinitely many solutions, then so does Ax=0 (b) If Ax=b is inconsistent, then Ax=0 has only the trivial... more
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