SOLUTION: my first qustion is how do you graph the linear equation 3x+y=7 my second question is how do you write an equation for "parallel to x+2=0 with x-intercept (-1,0)" in a slope inter

Algebra ->  Linear-equations -> SOLUTION: my first qustion is how do you graph the linear equation 3x+y=7 my second question is how do you write an equation for "parallel to x+2=0 with x-intercept (-1,0)" in a slope inter      Log On


   

Question 359743: my first qustion is how do you graph the linear equation 3x+y=7
my second question is how do you write an equation for "parallel to x+2=0 with x-intercept (-1,0)" in a slope intercept form?
Found 2 solutions by Fombitz, checkley77:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Find the intercepts.
Plot them, then connect them with the line.
To find the x-intercept, set y=0 and solve for x.
3x%2By=7
3x%2B0=7
3x=7
x=7%2F3
(7%2F3,0)
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To find the y-intercept, set x=0 and solve for y.
3x%2By=7
0%2By=7
y=7
(0,7)
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Typically parallel lines have identical slopes.
However in this case, the slope for x%2B2=0 or x=-2 is undefined.
It is a vertical line and cannot be represented with the slope intercept form, y=mx%2Bb.
It has the form x=a and since it passes through the point (-1,0), it has the exact form of x=-1.

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Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
3x+y=7
y=-3x+7
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+-3x+%2B7%29+ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, -3x +7).
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"parallel to x+2=0 with x-intercept (-1,0)"
x=-2
x=-1