anonymous
  • anonymous
Part a.) Find the slope of the line that contains the points, (1, 2) and (2, 5). Part b.) Using the slope that you found in part a and one of the given points, write the equation of the line. Please write your final answer in slope-intercept form.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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AriPotta
  • AriPotta
do you know the slope formula?
anonymous
  • anonymous
sorta.. i forgot
AriPotta
  • AriPotta
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AriPotta
  • AriPotta
what would the equation look like after you substitute the x's and y's?
anonymous
  • anonymous
2-5 / 2-1
AriPotta
  • AriPotta
(2-5)/(1-2) when you decide which coordinate pair will be "1" and "2" you gotta keep it like that
AriPotta
  • AriPotta
so what's our slope?
anonymous
  • anonymous
idk ? im confused now
AriPotta
  • AriPotta
what's 2 - 5?
anonymous
  • anonymous
-3
AriPotta
  • AriPotta
and what's 1 - 2?
anonymous
  • anonymous
-1
AriPotta
  • AriPotta
right, so what's -3/-1?
anonymous
  • anonymous
3
AriPotta
  • AriPotta
exactly, so our slope is 3
AriPotta
  • AriPotta
do you understand how we got that?
anonymous
  • anonymous
sorta can u just explain it in simplier terms
AriPotta
  • AriPotta
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AriPotta
  • AriPotta
|dw:1351215523686:dw|
anonymous
  • anonymous
okay so part a : is slope is 3 and part b is ?
AriPotta
  • AriPotta
do you know what point-slope form is?
AriPotta
  • AriPotta
because you have to put the information into point-slope form first before you can get it into slope-intercept form
anonymous
  • anonymous
YES. im just confused on now part b
anonymous
  • anonymous
y = 3x and what for slope form
AriPotta
  • AriPotta
what? point-slope form is y - y1 = m(x - x1)
anonymous
  • anonymous
(2-5)/(1-2)
AriPotta
  • AriPotta
you haven't done part b yet
AriPotta
  • AriPotta
if we use the first ordered pair for our equation, we know that y1 is 2, x1 is 1, and m is 3. so y - 2 = 3(x - 1)
AriPotta
  • AriPotta
do you know how to change that into slope-intercept form?
anonymous
  • anonymous
no
anonymous
  • anonymous
y = 3x-1?
AriPotta
  • AriPotta
that's right :D
anonymous
  • anonymous
thanks . i have a few more questions i need help with i would like help with them

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