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4 years ago

Can someone please help me with this .

Mathematics

2 answers:

schepotkina [342]4 years ago

8 0

- 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)

pav-90 [236]4 years ago

4 0

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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