Solve the system of linear equations using the matrix method.
What do X and Y equal?
2 answers:
Answer:
The matrix method is basically making the matrix in the picture equal to
{1 0 = x}
{0 1 = y}
To do this you must multiply reciprocals and add opposites to make 2x = 1, 7y = 0, 3x = 0, and -12y = 1.
I used the simple way of solving linear equations:
3(2x + 7y = 48)
-2(3x - 12y = 27)
6x + 21y = 144
-6x + 24y = -42
45y/45 = 102/45
y = 34/15 or 2.26667
Plug in y-value to get x-value:
2x + 7(34/15) = 48
- 7(34/15) -7(34/15)
2x = 482/15
2x/2 = 482/15/2
x = 241/15 or 16.06667
Algebra - Basic Definitions
A Variable is a symbol for a number we don't know yet. It is usually a letter like x or y. A number on its own is called a Constant.
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Step-by-step explanation:
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Replace x in the equations and see which one gets the matching y :
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Answer:
C
Step-by-step explanation:
(x,y) = p + t(a)
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Step-by-step explanation:
