Question

quick question.... On a xy-coordinate how do i know what to plug in the y2-y1/x2-x1 formula

Answer 1

u should know the 2 points through which your line is going

or one x or y coordinate can be not given, but then you have to know the slope to solve for this coordinate

Answer 2

if the y-intercept is 12 and the x-intercept is 5 ... how do i know which one to plug in where?

Answer 3

y = mx + b
where m is slope and b is y-intercept
x-intercept is when y =0 so you can write it in parentheses (x,y)----->>(5,0)

Answer 4

no but in the y2-y1/x2/x1

Answer 5

ohh so if y-intercept is 12
remember y-intercept when line cross y-axis when x=0
so (0 ,12)
and x-intercept like i say x when line cross x-axis when y = 0
so (5,0)

Answer 6

yea so how do i know which goes first in the y2-y1/x2-x1

Answer 7

and it doesn't matter
just remember y values should be at the top