anonymous
  • anonymous
how to graph? Y=-5X
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Isaiah.Feynman
  • Isaiah.Feynman
It would look something like this |dw:1377660607062:dw|.
anonymous
  • anonymous
ok thanks
anonymous
  • anonymous
well how did u found that out?

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More answers

jim_thompson5910
  • jim_thompson5910
when x = 0, y = 0 since y = -5x y = -5*0 ... plug in x = 0 y = 0
jim_thompson5910
  • jim_thompson5910
therefore, one point on this line is (0,0)
jim_thompson5910
  • jim_thompson5910
when x = 1, y = -5 because y = -5x y = -5*1 .... replace x with 1 y = -5 so we know that (1,-5) is also on the line
jim_thompson5910
  • jim_thompson5910
set up a coordinate axis |dw:1377660830862:dw|
jim_thompson5910
  • jim_thompson5910
add tick marks |dw:1377660848830:dw|
anonymous
  • anonymous
alright
jim_thompson5910
  • jim_thompson5910
plot the two points |dw:1377660894808:dw|
jim_thompson5910
  • jim_thompson5910
then draw a straight line through those two points |dw:1377660925008:dw|
anonymous
  • anonymous
cool thanks for ur help)))
jim_thompson5910
  • jim_thompson5910
you're welcome
anonymous
  • anonymous
so I do have this one as well y=3x+4 I solve it I got -4y=3x the I graph it like this is it right? |dw:1377661024596:dw|
jim_thompson5910
  • jim_thompson5910
the graph is incorrect
anonymous
  • anonymous
but I solve it right?
jim_thompson5910
  • jim_thompson5910
what happens when you plug in x = 0
anonymous
  • anonymous
3 becomes a 0
jim_thompson5910
  • jim_thompson5910
y = 3x + 4 y = 3*0 + 4 y = 0 + 4 y = 4 so you can see the point (0,4) is on the graph
anonymous
  • anonymous
that means I have to plug 0 to all x variables?
jim_thompson5910
  • jim_thompson5910
there's only one x term, but yes
jim_thompson5910
  • jim_thompson5910
what happens when x = 1?
anonymous
  • anonymous
then the numbers stays the same
jim_thompson5910
  • jim_thompson5910
what do you get for y
anonymous
  • anonymous
idk(
jim_thompson5910
  • jim_thompson5910
y = 3x + 4 y = 3*1 + 4 ... replace x with 1 (since x = 1) y = ??
anonymous
  • anonymous
7?
jim_thompson5910
  • jim_thompson5910
so (1,7) is also on the line
jim_thompson5910
  • jim_thompson5910
we have two points: (0,4) and (1,7)
jim_thompson5910
  • jim_thompson5910
that's enough info to plot the line
anonymous
  • anonymous
ok well the graph will be like this then? |dw:1377661673442:dw|
jim_thompson5910
  • jim_thompson5910
good, you got this down
anonymous
  • anonymous
yeah then I think I got it
jim_thompson5910
  • jim_thompson5910
that's great
anonymous
  • anonymous
thanks a lot for your help
jim_thompson5910
  • jim_thompson5910
you're welcome

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