OpenStudy (anonymous):

Write the equation of the vertical line passing through the point (3, 1).

5 years ago
OpenStudy (anonymous):

a vertical line is in the form of "x = c" where c is just a number... it is a line where all points on the line have the same x value, c. So here, your line must go through a point with x value of 3, right? does that give you any ideas?

5 years ago
OpenStudy (anonymous):

Ohh I get it so its c=3 right ?

5 years ago
OpenStudy (anonymous):

no, c was just an example of a number. But you were on the right track. It is x = 3.... all points up and down that vertical line have different y values, but they all have x = 3 as the x coordinate.

5 years ago
OpenStudy (anonymous):

So a vertical line through a point like (4,10) would have all x values equal to 4... that line would be x = 4. Unlike sloping lines which have equations like y = mx + b, vertical lines look like "x = some number"

5 years ago
OpenStudy (anonymous):

ohh okay thank you :)

5 years ago
OpenStudy (anonymous):

glad to help :) Hope it makes sense now. Btw, horizontal lines are also "weird" like that... a horizontal line equation will be like y = 2 (runs horizontally at y = 2) or y = -6 (horizontal line at y = -6)

5 years ago