// End script hiding -->
SOLUTION: how do you do the linear equation y=4-x?????????
Algebra
->
Graphs
-> SOLUTION: how do you do the linear equation y=4-x?????????
Log On
Ad:
Mathway
solves algebra homework problems with step-by-step help!
Algebra: Graphs, graphing equations and inequalities
Section
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on Graphs
Question 660771
:
how do you do the linear equation y=4-x?????????
Found 2 solutions by
jim_thompson5910, MathLover1
:
Answer by
jim_thompson5910(33401)
(
Show Source
):
You can
put this solution on YOUR website!
If you want to graph, then...
Start by rearranging terms to get
Looking at
we can see that the equation is in slope-intercept form
where the slope is
and the y-intercept is
Since
this tells us that the y-intercept is
.Remember the y-intercept is the point where the graph intersects with the y-axis
So we have one point
Now since the slope is comprised of the "rise" over the "run" this means
Also, because the slope is
, this means:
which shows us that the rise is -1 and the run is 1. This means that to go from point to point, we can go down 1 and over 1
So starting at
, go down 1 unit
and to the right 1 unit to get to the next point
Now draw a line through these points to graph
So this is the graph of
through the points
and
Answer by
MathLover1(11324)
(
Show Source
):
You can
put this solution on YOUR website!
if you have the linear equation, means its graph is a line
...rearrange terms on right side
....this is a
form of linear equation (
where
is a slope and
is
)
so, in your case
and
if slope is negative, means the line will mainly go through II and IV quadrant
is at (
,
)....now we have one point to plot on Cartesian coordinate system, and we need one more point to plot a line
easiest way is to find
if you set
:
...=>...
so,
is at (
,
)