Slope-Intercept Form: y=mx+b, m=slope, b=y-intercept.
Point-Slope Form: (pretend , is sub one!) y-y‚=m(x-x,)
Here is an example of this problem:
Find a line parallel to this that goes through the points (6,-2) 4x-y=3
y-y,=4(x-x,)
(y-(-2))=4(x-6)
y+2=4x-24
y=4x-22
you can also find the slope on standard form: ax + by = c by turning the equation into slope-intercept form.
ReplyDeleteax + by = c
-ax -ax
by = -ax + c
____________ =
b
y= -a/b + c/b
now you you are given standard form, you know that the slope will always be -a/b, and the y-intercept will be c/b.