Respuesta :

Answer:

Slope of a line parallel is -5/9.

Slope of a line perpendicular is 9/5.

Step-by-step explanation:

5x + 9y = 1

To find the slope of this line we convert the equation to slope-intercept form ( y = mx + c where m is the slope).

9y = -5x + 1

y = -5/9 x + 1/9

So its slope (m)  is -5/9.

So slope of a line parallel to this is also -5/9.

Slope of a line perpendicular = -1 / -5/9

= 9/5.

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