Question

Question #aedbc

Answer 1

slope is undefined.

Explanation:

`color(orange)"Reminder"`

`color(red)(bar(ul(|color(white)(2/2)color(black)("parallel lines have equal slopes")color(white)(2/2)|)))`

The line with equation x = 1 is parallel to the y-axis and passes through all points with an x-coordinate of 1

The slope of this line is `color(blue)"undefined"` hence the slope of the line through (4 ,-2) is `color(blue)"undefined"`