The first thing you must remember is that the product of matrices is done by multiplying rows by columns.
For this case, the AB matrix is
AB = [1 0 0; 0 1 0; (x + 1) 0 y]
Equalizing the identity matrix we have
AB = I
[1 0 0; 0 1 0; (x + 1) 0 y] = [1 0 0; 0 1 0; 0 0 1]
Therefore we have
x + 1 = 0
y = 1
The values of x and y are
x = -1
y = 1
the answer is
X=-1
Y=1
Answer:
x= -4
Step-by-step explanation:
distribute
combine like terms
subtract 4x from both sides
subtract 8 from both sides
divide both sides by -2
Answer: b
Step-by-step explanation:
keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above

well then, so since this equation has that slope therefore

so we're really looking for the equation of a line whose slope is 8/5 and runs through (10,10)

Answer:
5.6
Step-by-step explanation:
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