SOLUTION: can you please show me how to get my own anwer step by step homework due tommoro example one question is y+x=7. this is a worksheet from teacher equation of line. please

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Question 172892: can you please show me how to get my own anwer step by step homework due tommoro
example one question is y+x=7. this is a worksheet from teacher equation of line. please
Found 2 solutions by jim_thompson5910, colliefan:
Answer by jim_thompson5910(21685) About Me  (Show Source):
You can put this solution on YOUR website!
Do you want to graph this?


If so, then in order to graph y%2Bx=7, we MUST solve for "y" first.


y%2Bx=7 Start with the given equation.


y=7-x Subtract x from both sides.


y=-x%2B7 Rearrange the terms.



Looking at y=-x%2B7 we can see that the equation is in slope-intercept form y=mx%2Bb where the slope is m=-1 and the y-intercept is b=7


Since b=7 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

drawing%28500%2C500%2C-10%2C10%2C-10%2C10%2C%0D%0A++grid%281%29%2C%0D%0A++blue%28circle%280%2C7%2C.1%29%29%2C%0D%0A++blue%28circle%280%2C7%2C.12%29%29%2C%0D%0A++blue%28circle%280%2C7%2C.15%29%29%0D%0A%29


Now since the slope is comprised of the "rise" over the "run" this means
slope=rise%2Frun

Also, because the slope is -1, this means:

rise%2Frun=-1%2F1


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
drawing%28500%2C500%2C-10%2C10%2C-10%2C10%2C%0D%0A++grid%281%29%2C%0D%0A++blue%28circle%280%2C7%2C.1%29%29%2C%0D%0A++blue%28circle%280%2C7%2C.12%29%29%2C%0D%0A++blue%28circle%280%2C7%2C.15%29%29%2C%0D%0A++blue%28arc%280%2C7%2B%28-1%2F2%29%2C2%2C-1%2C90%2C270%29%29%0D%0A%29

and to the right 1 unit to get to the next point
drawing%28500%2C500%2C-10%2C10%2C-10%2C10%2C%0D%0A++grid%281%29%2C%0D%0A++blue%28circle%280%2C7%2C.1%29%29%2C%0D%0A++blue%28circle%280%2C7%2C.12%29%29%2C%0D%0A++blue%28circle%280%2C7%2C.15%29%29%2C%0D%0A++blue%28circle%281%2C6%2C.15%2C1.5%29%29%2C%0D%0A++blue%28circle%281%2C6%2C.1%2C1.5%29%29%2C%0D%0A++blue%28arc%280%2C7%2B%28-1%2F2%29%2C2%2C-1%2C90%2C270%29%29%2C%0D%0A++blue%28arc%28%281%2F2%29%2C6%2C1%2C2%2C+0%2C180%29%29%0D%0A%29


Now draw a line through these points to graph y=-x%2B7

drawing%28500%2C500%2C-10%2C10%2C-10%2C10%2C%0D%0A++grid%281%29%2C%0D%0A++graph%28500%2C500%2C-10%2C10%2C-10%2C10%2C-x%2B7%29%2C%0D%0A++blue%28circle%280%2C7%2C.1%29%29%2C%0D%0A++blue%28circle%280%2C7%2C.12%29%29%2C%0D%0A++blue%28circle%280%2C7%2C.15%29%29%2C%0D%0A++blue%28circle%281%2C6%2C.15%2C1.5%29%29%2C%0D%0A++blue%28circle%281%2C6%2C.1%2C1.5%29%29%2C%0D%0A++blue%28arc%280%2C7%2B%28-1%2F2%29%2C2%2C-1%2C90%2C270%29%29%2C%0D%0A++blue%28arc%28%281%2F2%29%2C6%2C1%2C2%2C+0%2C180%29%29%0D%0A%29 So this is the graph of y=-x%2B7 through the points and

Answer by colliefan(55) About Me  (Show Source):
You can put this solution on YOUR website!
If there are 2 variables in the equation, you need 2 equations. What is the other equation?