Question

#Geometry HELP! :/ Writing the equations of a line. I don't get ti! :/

Answer 1

given the coordinates of two points you can find the slope of the line:
two points (x1,y1) and (x2,y2)
the slope is
(y2-y1)
------
(x2-x1)

then you can use the following formula to obtain your equation

y - y1 = m (x - x1)

where m = slope and (x1,y1) is a point on the line

Answer 2

I was told to use the y=mx+b formula...

Answer 3

the 'b' is the intercept on the y axis - that is the value of y when x = 0.
if you are given this value initially then use this formula
the formula i mentioned above is best to use if you are given just two points

Answer 4

if they require y = mx + b equation you can get it from the other form by plugging in x=0