kweb2017
  • kweb2017
If a line crosses the y-axis at (0, -3) and has a slope of 3, what is the equation of the line?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
use this formula to find the equation\[y=mx+c\]where\[y=vertical~axis\]\[x=horizontal~axis\]\[m=slope\]\[c=y-intercept\]
anonymous
  • anonymous
u have the value of x and the value of y and also the slope
anonymous
  • anonymous
substitute the value inot the formula to find the equation

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anonymous
  • anonymous
into*
anonymous
  • anonymous
\[y=-3\]\[x=0\]\[m=3\]\[c=?\]
anonymous
  • anonymous
\[y=mx+\color{red}{c}\] substitute the value to find c
anonymous
  • anonymous
\[-3=3(0)+c\]
kweb2017
  • kweb2017
so it would be 3x+y=3?
anonymous
  • anonymous
how do u get that?
kweb2017
  • kweb2017
its one of my options on my paper
anonymous
  • anonymous
well u hv the value for x,where x=0 and the value of y,where y=-3 and also the slope,m=3 sbstitute this into\[y=mx+c\]to find the value of c
anonymous
  • anonymous
\[(0,-3)=(x,y)\]\[m=3\]
anonymous
  • anonymous
\[-3=3(0)+c\]
anonymous
  • anonymous
what is the value for 3 multiply by 0?
kweb2017
  • kweb2017
3x-y=3
anonymous
  • anonymous
correct!
kweb2017
  • kweb2017
Thank you :)
anonymous
  • anonymous
yw ^_^
anonymous
  • anonymous
Btw,\[\huge{Welcome~To~OpenStudy}\] @kweb2017
kweb2017
  • kweb2017
thank you :)))))
anonymous
  • anonymous
np ^_^

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