Solve this eqution with work please also show work solve for x and y x=-y+5 y=-3x+3

2 answers:

7 0

The answer is x=−1 and y=6. You can solve it using a graph, substitution, or elimination.

tankabanditka [31]2 years ago

4 0

So you are given what x and y are. All you have to do is substitute and simplify.
Since y = -3x + 3
The y value in the first equation can be substituted for -3x + 3
I.e. x = - (-3x + 3) + 5
So where you see 'y' in the first equation, put in what y actually is.
Now simplify
x = 3x - 3 + 5 [two minuses makes a positive]
x = 3x + 2
-2x = 2
so x = 2/-2 = -1

With the value of x you found, substitute it in to find y
I.e. y = -3(-1) + 3
y = 3 + 3 = 6

So x = -1 and y = 6

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9514 1404 393

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The law of sines tells you ...

sin(C)/c = sin(A)/a

sin(C) = (c/a)sin(A)

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