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Q: Is y equals 3x plus 1 and y equals 3x - 7 perpendicular?

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y = 1/3x+4

3x+y = 4 y = -3x+4 Perpendicular slope: 1/3

No because the slope of the second equation is 1/4 and for it to be perpendicular to the first equation it should be 1/3

-1

y = 1/3x+4/3

- 1/3

Slope of given line = -3 Therefore, slope of perpendicular = 1/3

(2, -1)

y equals -1/3x plus 4/3

8

y = 3x + 1

y = 3X - 1

-3

Perpendicular to 2x - 3y = 8 through the point ( 2, 1 ) (Perpendicular means the slopes are negative inverses of each other) 3x+2y = 8

If: 3x+5 = 4x+1 Then: x = 4

(1, 1)

1

x + 2 = 3x-1 -2x = -3x = 1,5

It is called the commutative property, a + b = b + a

0 because X= -1

3x(2x + 1)

1

It is: 1

1

2x+5=3x+1 -x=-4 x=4