How can i determine perpendicular lines

Step-by-step explanation:

Lines are considered to be perpendicular if the angle between at the point they intersect is 90°, or a right angle.

If you have the equations of two lines, you can determine if they are perpendicular by looking at their slope. For the slope-intercept form of a line,

is the slope of the line.

Two lines are considered perpendicular, if the slope of one line is , and the slope of the other line is .

For example, if a line had a slope of 4, say , then a line that would be perpendicular to this line would have a slope of , say .

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b