Question

What is the equation of the line (in y=mx+b form) which includes points (1, 1) and (1, 5)?

Answer 1

Are you able to graph this line?

Answer 2

it doesn't say im not supposed to, but theres no graph given

Answer 3

are you able to plot the two points on the same coordinate grid?

Answer 4

same thing-- i can but im not sure if im supposed to

Answer 5

well graphing helps see what I'm trying to point out

if you graph the line, you'll see that it's a vertical line

It turns out that you cannot write the equation of a vertical line in the form y = mx+b. Why? because the slope m is undefined when you have a vertical line

Answer 6

also, if you use the slope formula to find m, you get

m = (y2-y1)/(x2-x1)

m = (5-1)/(1-1)

m = 4/0

m = undefined

Answer 7

well its multiple choice so best guess?

y = 1

y = x + 1

x = 1

y = -x - 1

Answer 8

what's the x coordinate of each point?

Answer 9

1 and 1. im not dumb im just not sure of the answer

Answer 10

correct, so x = 1 is your answer. You aren't dumb, you were probably just overthinking things.