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3. Option 2 (Perpendicular)

4. Option 3 (neither)

Step-by-step explanation:

3.

m1 = -7/8

Second equation: -8x + 7y = -21

7y = 8x - 21 y = (8/7)x - 3

m2 = 8/7

m1 & m2 are not equal, so not parallel

Since m1×m2 = (-7/8)(8/7) = -1,

They are Perpendicular

4.

m1 = -1/4

Second equation: -2x + 8y = 6

8y = 2x + 6 y = (1/4)x + 3/4

m2 = 1/4

m1 & m2 are not equal, so not parallel

Since m1×m2 = (-1/4)(1/4) = -1/16, not -1. They are not Perpendicular either. So, neither

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step-by-step explanation:

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0