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Naily [24]
3 years ago
8

3. 2x – y = -7 4x – y = -4 A) (-1.5, 4) B) (1.5, 10) C) (4, -1.5) D) (-1.5, -2)

Mathematics
1 answer:
marishachu [46]3 years ago
7 0
Multiply first equaton by -1 and add to first

-2x+y=7
<u>4x-y=-4 +</u>
2x+0y=3

2x=3
divide 2
x=3/2

sub
2x-y=-7
2(3/2)-y=-7
3-y=-7
minus 3
-y=-10
negative 1 times both sides
y=10

(3/2,10)
(1.5,10)

B is ansre
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sertanlavr [38]

The statements about the function that are true are

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<h3>How to interpret the graph?</h3>

The equation of the graph is given as

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The graph of the function is added as an attachment

On the graph, we have

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Also, the graph crosses the x-axis at x = 1 and x = -7

This means that the graph is positive at x >1 and x >-7

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