Answer:
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Step-by-step explanation:
Answer:
The augmented matrix of the system is .
We apply operations rows:
1. We swap row 1 and 2 and obtain the matrix .
2. Of the above matrix we subtract row 1 from row 2 twice (R2 - 2R1) and we subtract row 1 from row 3, 5 times. (R3-5R1). We obtain the matrix
3. Of the above matrix we subtract row 2 from row1 twice (R3 - R2) and multiply the row 1 by -1 (-R2). Weobtain the matrix .
Since each pivote is an one then we conclude that the above matrix is the reduced row-echelon form of the matrix of the system.
The equation for l is y = 4.
The equation for p is x = -4.
The equation for m is y = -2x + 4.
The equation for n is y = x - 1.
Answer:
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Step-by-step explanation:
0.10x9=90
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Answer:
x ≥ -1
Step-by-step explanation:
The domain is all the possible x-values of the function.
Reading from left to right, the first x-value is x = -1 (which is included because the dot is filled in.) From there, the graph goes to the right, towards infinity.
So x is greater than or equal to -1.
x ≥ -1