this isn't a test I'm just trying to make up some missing work and this one really confuses me if you guys could explain it the
question is in the screenshot I linked to this question
2 answers:
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As given by the question
There are given that the point of two-line
Now,
From the condition of a parallel and perpendicular line
If the slopes are equal then the lines are parallel
If the slopes are negative reciprocal then the lines are perpendicular
If the slopes are neither of the above are true then lines are neither
Then,
First, find the slope of both of line
So,
For first-line, from the formula of slope
Now,
For second-line,
The given result of the slope is negative reciprocal because
Hence, the slope of line1 is -1/2, and slope of line2 is 2 and the lines are perpendicular.