Question 157835: Write an equation of the line that is parallel to y= 3x-4 and passes through point (0,-3).
PLEASE HELP- Thanks!
Found 2 solutions by Alan3354, Electrified_Levi:
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Write an equation of the line that is parallel to y= 3x-4 and passes through point (0,-3).
-------------
Lines that are parallel have the same slope. The eqn is in slope-intercept form, y = mx+b, so the slope, m, is 3.
-----------
Then, use the given point in the slope-intercept form:
y-y1 = m*(x-x1) where (x1,y1) is the given point (0,-3)
y -(-3) = 3*(x - 0)
y+3 = 3x
y = 3x - 3 slope-intercept form
3x-y = 3 standard form
Answer by Electrified_Levi(103)  (Show Source):
You can put this solution on YOUR website! Hi, Hope I can help,
.
Write an equation of the line that is parallel to  and passes through point (0,-3).
PLEASE HELP- Thanks!
.
You are trying to find a parallel line to  , which means the line has the same slope
.
the slope intercept form of a line =  , ( "m" = slope )("b" = y intercept)
.
Since we know the slope of both lines ( slope = 3)(parallel lines have same slope), We can replace "m" with "3" in our equation
.
=  = 
.
Since the line includes the point (0,-3), points are given as (x,y), we can replace "x" and "y" with the numbers( replace "x" with "0", "y" with (-3) )
.
=  =  = 
= 
.
We can replace "b" with (-3) in our equation
.
=  = 
.
You can check our equation by replacing "x" and "y" again, with (0,-3)(x,y) in our equation
.
=  =  =  (True)
.
is your answer,
.
Here are the graphs of the two lines
.
green line = 
red/brown line =
.
.
As you can see, line is parallel to
.
is your answer
.
Hope I helped, Levi
|
|
|
