Asked by caduceus
Which choice could be the equation of a line perpendicular to the line represented by this equation?
y = 5
for this question, i put this:
y = -1/5x
but, it says i am wrong. how is that? 5 is 5/1, and so the negative reciprocal of 5/1 would be -1/5, right?
y = 5
for this question, i put this:
y = -1/5x
but, it says i am wrong. how is that? 5 is 5/1, and so the negative reciprocal of 5/1 would be -1/5, right?
Answers
Answered by
Anonymous
You are correct. Maybe they anticipated
(-1/5)*x, or -x/5, or -0.2x, or maybe they are just wrong.
(-1/5)*x, or -x/5, or -0.2x, or maybe they are just wrong.
Answered by
Reiny
y = 5 or y = 0x + 5
is a horizontal line with slope of 0
Thus a perpendicular line would be a vertical line, which has an undefined slope.
Any vertical line has the form x = k , where k is a constant
is a horizontal line with slope of 0
Thus a perpendicular line would be a vertical line, which has an undefined slope.
Any vertical line has the form x = k , where k is a constant
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