anonymous
  • anonymous
Can someone please help me find the equation for this chart I've found the slope already just need the y-intercept.. Thanks :)
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
|dw:1434826355134:dw|
anonymous
  • anonymous
Someone please :( so far I got y=4x but idk how to find the y-intercept
anonymous
  • anonymous

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anonymous
  • anonymous
???
anonymous
  • anonymous
no you have it backwards m=slop B=y-intercept
anonymous
  • anonymous
http://www.purplemath.com/modules/strtlneq.htm m=slope y=y-intercept
anonymous
  • anonymous
haha
anonymous
  • anonymous
b is not your slope and m is not the y intercept. you have that backwards.
anonymous
  • anonymous
m is the slope and b is the y intercept
anonymous
  • anonymous
little late nixy :3 but do you guys know how to find the y-intercept im having trouble
anonymous
  • anonymous
f() = y The f() is a function but the so your points are (-7,-1) (1,1) (5.2) slope = m = \( \frac{Y_1-Y_2}{X_1-X_2} \) slope =\( \frac{1}{4} \) Now take any point and use the point slope form and plug in one of the points \( y - y_1 = m(x - x_1) \) \( y - 1 = m(x - 1) \) Are you still with me and see what I am doing?
anonymous
  • anonymous
f() = y The f() is a function but the so your points are (-7,-1) (1,1) (5.2) slope = m = \( \frac{Y_1-Y_2}{X_1-X_2} \) slope =\( \frac{1}{4} \) Now take any point and use the point slope form and plug in one of the points \( y - y_1 = m(x - x_1) \) \( y - 1 = m(x - 1) \) \( y - 1 = \frac{1}{4}(x - 1) \) Now lets get rid of the fraction. Times it all by 4. \( 4(y - 1) = 4(\frac{1}{4}(x - 1)) \) \( 4y - 4 = 4x - 4 \) Now put it in slope intercept form \( 4y - 4 = 4x - 4 \) \( 4y - 4+4 = 4x - 4 +4 \) \( 4y = 4x \) \( \frac{4y}{4} = \frac{4x}{4} \) \( y = 4x \) The y intercept is at 0
anonymous
  • anonymous
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