Can someone please help me with this .
2 answers:
- 3x + 4y = - 11
y = 2x - 4
-3x + 4(2x - 4) = -11
-3x + 8x - 16 = - 11
5x = -11 + 16
5x = 5
x = 5/5
x = 1
y = 2x - 4
y = 2(1) - 4
y = 2 - 4
y = -2
Solution: (1, -2)
Let's go ma dude,
-3x + 4y = -11
y = 2x - 4
We know that y = 2x - 4 so we plug it into the first equation:
-3x + 4(2x - 4) = -11
-3x + 8x - 16 = -11
5x - 16 = -11
5x = 5
x = 1
Now we know that x = 1 so we plug it into the first/ second equation:
-3(1) + 4y = -11
-3 + 4y = -11
4y = -8
y = -2
And walla ur answer is reddy!
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