Linear Algebra

if left side and right side of an equation are equal then if we divide if by same number then it will not change for eg 2(x+1):-50

then x:-24

if we divide it by 2 both the side then

2(x+1)/2:-50/2

x+1:-25

x:-25-1:-24

in both the cases ans are same so if we divide both side of the equation by nonzero number the value doesnt change.

Unfortunately, the browser used by Answers.com for posting questions is incapable of accepting mathematical symbols. This means that we cannot see the mathematically critical parts of the question. We are, therefore unable to determine what exactly the question is about and so cannot give a proper answer to your question. However, I suspect that the answer is in the negative.

when you solve a questiom, you get an answer. If you chect your answer by substituting the value of the variable in the question and you don't get L.H.S and R.H.S equal then your answer is called extraneous solution.

Hi

Both straight line equations will have the same slope or gradient but the y intercepts wll be different

y - d = cx

so d = - cx + y

That is the slope-intercept form in the c-d plane.

Slope = -x

Intercept = y

10 hectolitres = 1 kilolitre so 910 hL = 910/10 = 91 kL. Simple!

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Yes. In real data there usually are non-integer data points. When learning about lines and points we try to use simple points.

Only square matrices have inverses.

Because in dot product we take projection fashion and that is why we used cos and similar in cross product we used sin

None, one or many - including infinitely many.

yes it can if the exponent is 1.

To find the value of n

-7n=63

n=63/-7

n-9

Hence,-9 is the required answer.

x=abs(y+z)

x=+(y+z)=y+z

x=-(y+z)=-y-z

-3 , 3

They are other proportions.

5

Two dependent linear equations are effectively the same equation - with their coefficients scaled up or down.

You could not graph (y-x-2) because it has no equal sign in it. In order to graph an equation, there must be a value that the numbers and variables are equal to. (e.g. y=2x+3)

Because linear equations are based on algebra equal to each other whereas literal equations are based on solving for one variable.

If the co-ordinates of linear equation are marked on the graph, the co-ordinates are always in a straight line. If the co-ordinates are not in the straight line, their might be problem in the calculation.

x + 10 = 18

18 - 10 = x

18 -10 = 8

x = 8

The equation in slope-intercept form would be y=-2x

of course it does