Question

Explain the Error: Alan says that two lines in the coordinate plane are perpendicular if and

only if the slopes of the lines are m and 1/m. Identify and correct two errors in Alan’s statement.

Answer 1

Check the step-by-step

Explanation:

To get the perpendicular you need to find the negative reciprocal, therefore, he is wrong as he did not switch the negative/positive sign in m & 1/m. Also, if m is a fraction like 5/3, the reciprocal would not be 1/m, it would be 3/5 as you flip the denominator and numerator.