anonymous
  • anonymous
Points A and B lie on the graph of the equation y = −4.3x. What are the y-coordinates for each point? Point A: (−3, ) Point B: (5, )
Mathematics
chestercat
  • chestercat
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jim_thompson5910
  • jim_thompson5910
Point A has the x coordinate of -3. Plug this value into the equation to find y. y = -4.3x y = -4.3*(-3) ... replace x with -3 y = 12.9 So when x = -3, y = 12.9 giving the complete point A(-3, 12.9). I'll let you do point B.
anonymous
  • anonymous
im srry i still do get : (
jim_thompson5910
  • jim_thompson5910
where are you stuck?

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anonymous
  • anonymous
the whole thing lol
jim_thompson5910
  • jim_thompson5910
do you see how I replaced x with -3 ?
anonymous
  • anonymous
yeah
jim_thompson5910
  • jim_thompson5910
after that, I multiplied -4.3 by -3 to get 12.9
jim_thompson5910
  • jim_thompson5910
that's what -4.3x means it means "take -4.3 and multiply it with some number x" x in this case is -3
anonymous
  • anonymous
k
jim_thompson5910
  • jim_thompson5910
try point B
jim_thompson5910
  • jim_thompson5910
write out your steps or thinking on that

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