Question

The lines shown below are perpendicular. If the green line has a slope ofwhat is the slope of the red line?ih510A.1B. 7Oc. -7D.-INان ال۔

Answer 1

Recall that the product of the slopes of two perpendicular lines is equal to

`-1,`

therefore, if the slope of the green line is 1/7, and x the slope of the blue line we can set the following equation:

`(1)/(7)x=-1.`

Solving for x we get that:

`x=-7.`

Answer: Option C.