Since this week we have offically finsihed our lesson on slope intercept, standard form, and point slope, i can say theis while being 90% right.
If the line is vertical it has no slope, horizontal's slope is 0. that is right, 0. that is its slope because it "has" slope.
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The line perpendicular to a line with a slope of 1/5 has a slope of -5.
The slope of a line is undefined if the line is vertical.
The slope of a line perpendicular to one with slope m is -1/m. So for a line with slope 1/7, any line perpendicular to it will have: slope = -1 / (1/7) = -7
A vertical line has a slope of infinity.
Well since the lines are parallel they would have the same slope. And the slope of any horizontal line is 0. The slope of a vertical line is undefined.