SOLUTION: consider the line y=8x-9 What is the slope of a line parallel to this line? What is the slope of a line perpendicular to this line?

Algebra ->  Linear-equations -> SOLUTION: consider the line y=8x-9 What is the slope of a line parallel to this line? What is the slope of a line perpendicular to this line?       Log On


   

Question 1003874: consider the line y=8x-9
What is the slope of a line parallel to this line?
What is the slope of a line perpendicular to this line?
Answer by MathLover1(20850) About Me  (Show Source):
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compare the line y=8x-9 to y=mx%2Bb where m is a slope and b is y-intercept
so, the line y=8x-9 has a slope m=8
by definition, the slope of a line parallel to this line will be same, m=8
by definition, the slopes of perpendicular lines are negative reciprocals to each other; so,m=-1%2F8