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svetoff [14.1K]
4 years ago
10

Here are the equations of 4 straight lines. Two of these lines are parallel what are the two parallel lines? A) y=2x+4. B) 2y=x+

4. C) 2x+2y=4. D) 2x-y=4. ?
Mathematics
1 answer:
Alchen [17]4 years ago
6 0
Put ur equations in y = mx + b form and compare the slopes(m) and the y intercepts (b). Parallel lines will have the same slope but different y intercepts.

A) y = 2x + 4....slope is 2, y int is 4
B) 2y = x + 4
     y = 1/2x + 2.....slope is 1/2 and y int is 2
C) 2x + 2y = 4
     2y = -2x + 4
     y = -x + 2.....slope is -1 and y int is 2
D) 2x - y = 4
    -y = -2x + 4
     y = 2x - 4....slope is 2 and y int is -4

ur parallel lines will have same slope and different y int.....so ur answer is A and D.
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(1/2)x + y = 4

Multiply both sides by 2

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Option B.
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To find the gradient of a line we first hv to find the formula

so Gradient=√X1-x2and √y1-y2

((-2,1) and (0,-5)) line 1

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first we will work for line 1

X1 is -2

X2 is -0

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Y2 is -1

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so we substitute the values

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we substitute the values

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Ur answer should look like this -3

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Answer:

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Answer:

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