Which ordered triple is a solution of the following linear system?: 2x+3y+2z=26 −x+7y−z=21 3x+2y−5z=13
1 answer:
For this case we have the following system of equations:
From equation 2 we can clear z:
We substitute the values of z in equations 1 and 3:
From here, we obtain a system of two equations with two unknowns, whose graphical solution is given by the intersection of both lines:
Note: See attached image for the graphic solution
We now look for the value of z replacing the found values of the graphic solution:
Therefore, the triple ordered solution is:
Answer:
See attached image
From equation 2 we can clear z:
We substitute the values of z in equations 1 and 3:
From here, we obtain a system of two equations with two unknowns, whose graphical solution is given by the intersection of both lines:
Note: See attached image for the graphic solution
We now look for the value of z replacing the found values of the graphic solution:
Therefore, the triple ordered solution is:
Answer:
See attached image
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Answer:
A) a vertical line does not represent a function.
Step-by-step explanation:
For a relation to be a function for each value of there must be only one value of
. In other words a function is one in which each value in the domain set corresponds to only one value in the range set.
Let us check for this condition in the give choices:
A) a vertical line
A vertical line is given as which meas it is parallel to y-axis and has infinite number of
values for a single
value.
So, its Not a function
B)
For the given equation, on plugging in some value will give a single
value.
So, its a Function
C) a horizontal line
A horizontal line is given as which meas it is parallel to x-axis and has infinite number of
values giving a single
value.
So, its a Function
D) {(1, 7), (3,7), (5, 7), (7,7)}
For the given set for different valuesthere is only one
value.
So, its a Function