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22. What is the slope of a line, in the standard (x,y)
coordinate plane, that is parallel to x + 5y = 9 ?
A. -5
B. -1/5
C. 1/5
D. 9/5
E. 9


Sagot :

The slope of a line parallel to the line x + 5y = 9 is; Choice B: -1/5

Slope of a line

The slope of parallel lines from line geometry are equal.

The given parallel line equation is; x + 5y = 9:

Hence, it follows that the two lines have equal slopes.

By rewriting the equation to take the slope-intercept form of straight lines, it follows that;

  • y = (-1/5)x + 9

On this note, the slope of the parallel lines is; -1/5

Read more on slope of a line;

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