Question

The following lines are perpendicular:y = 7x - 1y = 1 / 7x + 3Select one:TrueFalse

Answer 1

Recall that two lines are perpendicular if the product of their slopes is equal to -1.

Now, notice that the equations of the lines are in slope-intercept form:

$y=mx+b,$

where m is the slope of the line.

Therefore, the slopes of the lines are:

$7,\text{ and }\frac{1}{7}.$

The product of the above numbers is:

$1.$

Therefore, the lines are not perpendicular.

Answer: False.