anonymous
  • anonymous
plz help i really need this credit and i have no idea what im doing The slope of diagonal OA is ???? , and its equation is ??? I will post the graph in the comments
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
Answer choices for first blank A.4/3 B.3/4 C.1
anonymous
  • anonymous
Answer choices for second blank: A.4x-y=0 B.x-3y=0 C.4x-3y=0

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welshfella
  • welshfella
count the units from point A straight down to the x axis then count from this point on the x axis left to the 0 slsope = first count / second
welshfella
  • welshfella
|dw:1437053596264:dw|
welshfella
  • welshfella
the slope = y / x
anonymous
  • anonymous
so B. 3/4?
anonymous
  • anonymous
but the how do you find the equation?
welshfella
  • welshfella
no its not 3/4 check again
welshfella
  • welshfella
its the vertical distance / horizontal distance - sometimes called rise/run
anonymous
  • anonymous
A.4/3
welshfella
  • welshfella
right
anonymous
  • anonymous
cool thanks now i just need to find the equation
welshfella
  • welshfella
the general form for a straight line is y = mx + b where m = slope (which we have just found) and b = intercept on the y-axis
welshfella
  • welshfella
|dw:1437054098723:dw|
welshfella
  • welshfella
in your case the intercept is at 0 so we have y = (4/3) x + 0 = (4/3) x
welshfella
  • welshfella
now you need to get rid of the fraction 4/3 so to get it into one of the forms in the choices Can you do this?
welshfella
  • welshfella
|dw:1437054276881:dw|
anonymous
  • anonymous
im alittle confused
welshfella
  • welshfella
can you see how we got the above equataion?
anonymous
  • anonymous
yes
welshfella
  • welshfella
h = mx + bb and m = 4/3 , b = 0
welshfella
  • welshfella
Ok so to get rid of the fraction 4/3 we multiply each term by 3
welshfella
  • welshfella
|dw:1437054456654:dw|
welshfella
  • welshfella
note they have 4x - 3y = 0 we get this from our equation by subtract 3y from both sides of the '=' 3y - 3y = 4x - 3y 4x - 3y = 0
welshfella
  • welshfella
this is stand form - the x term first then the y term and the number after the =
welshfella
  • welshfella
* standard form
anonymous
  • anonymous
Thank you you helped me so much
welshfella
  • welshfella
yw

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