anonymous
  • anonymous
graph the system of equations. How many solutions exist for this system of equations.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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jdoe0001
  • jdoe0001
so, where are they?
anonymous
  • anonymous
me
jdoe0001
  • jdoe0001
you said, "graph THE system of equations", which one?

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More answers

anonymous
  • anonymous
this y=3x-9 and y=-1/3x+3
zzr0ck3r
  • zzr0ck3r
they are orthogonal lines, so how many times do they cross?
zzr0ck3r
  • zzr0ck3r
orthogonal = perpendicular
anonymous
  • anonymous
? i don't get how do graph them
jdoe0001
  • jdoe0001
pick any two points for each, and plot that
zzr0ck3r
  • zzr0ck3r
do you know how to find the y intercept and the x intercept?
anonymous
  • anonymous
that is what i have to choose from a.) The system has one solution. b.) There are no solutions to the system. c.) There are an infinite number of solutions
anonymous
  • anonymous
I am really bad at math
jdoe0001
  • jdoe0001
so, just pick any two points for one, plot them on the cartesian plane, do the same for the other, they're both a line, so, all you need is 2 points for each
anonymous
  • anonymous
so the right one would be A i think
jdoe0001
  • jdoe0001
the right one... as opposed to the left one? did you graph them?
anonymous
  • anonymous
yes but i don't get it i think i did it wrong
anonymous
  • anonymous
I mean a.) The system has one solution.
jdoe0001
  • jdoe0001
well, when you have 2 functions, and "x" and "y" in both usually means, that the "x" and "y" above and below have the same value, or are the same if x = 3 above x= 3 below too a "solution" graphically occurrs, when "x" and "y" have the same value or are the same for both graphics/lines, that is, WHERE they intersect, at that point, "x" and "y" are the same for both so, take a peek at your plotted graph, do they touch each other? more than once? not at all?
anonymous
  • anonymous
I think they touch once
jdoe0001
  • jdoe0001
where? at what coordinates? (x,y)
anonymous
  • anonymous
x
jdoe0001
  • jdoe0001
and what's the value of "x" there?
anonymous
  • anonymous
3
jdoe0001
  • jdoe0001
and "y"?
anonymous
  • anonymous
3
jdoe0001
  • jdoe0001
meaning you haven't done the plotting :/ try plotting them here -> http://www.fooplot.com/
jdoe0001
  • jdoe0001
see if they intersect, once, more than once, not at all
anonymous
  • anonymous
i don't know how to plot the Y=3x-9 y=-1/3x+3
jdoe0001
  • jdoe0001
you give a value to "x", say 10, so y will be = 3(10)-9 = 30-9 = 21
jdoe0001
  • jdoe0001
"x" is INDEPENDENT to get any value pretty much, "y" is DEPENDENT on whatever "x" gets for its value
anonymous
  • anonymous
i still don't think i am doing it right on the fooplot
jdoe0001
  • jdoe0001
at fooplot all you do is, type it in
anonymous
  • anonymous
the whole thing
jdoe0001
  • jdoe0001
http://www.fooplot.com/#W3sidHlwZSI6MCwiZXEiOiIzeC05IiwiY29sb3IiOiIjMDAwMDAwIn0seyJ0eXBlIjowLCJlcSI6Ii0xLzN4KzMiLCJjb2xvciI6IiMwQTBCMkUifSx7InR5cGUiOjEwMDB9XQ--
anonymous
  • anonymous
thanks
anonymous
  • anonymous
they touch almost on 2
anonymous
  • anonymous
and they only touch once
anonymous
  • anonymous
thank you :)

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