Question

How do I write the equation of the line which passes through (5, –2) and is parallel to x = 4?

Answer 1

x=4 is a vertical line so a line parallel to that must also be vertical.
points on a vertical line have all the same x coordinates so:
x=5

Answer 2

Okay, is there a formula? I learned y-y1=m(x-x1) then solve from there but when i used this i got it wrong????

Answer 3

You dont use the formula when its a vertical or horizontal line.
vertical lines always have the form x=some number, and if you have a coordinate just use the x value as your number.

Answer 4

So the asnwer is just x = 4? or x = 5? I'm honestly confused

Answer 5

x=5

think about a vertical line, every point on that line has the same x coordinate. You have the point (5,-2) so the equation will be x=5

Answer 6

Is there no work to show?

Answer 7

Not really

Answer 8

Sorry for all the questions, I'm just having a hard time grasping it. There's no specific way to solve that? Hahaha. Like is it just a you-know-it or you don't type thing?

Answer 9

Yep, just remember a vertical line has all the same x coordinates. So another example would be whats the equation of a vertical line that passes through the point (3,2)?

that one would be x=3

if its vertical its always going to just be x=the x coordinate of a point on the line

Answer 10

And hortizontal lines have the same y coordinates? Thank you so much for your help by the way, you've been great :-)

Answer 11

Yep horizontal lines will be the same thing but with y coordinates.
y=whatever the y coordinate is