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slopes?? wat are those??

nahlataher

New member
Joined
Jan 29, 2010
Messages
3
wat is an equation of the line that passes through the point (4,-6) and has a slope of -3??? some one plzzz help me those are the choices
y= 3x+6
y=3x+6
y=3x+10
y=3x+14
 

wjm11

Senior Member
Joined
Nov 13, 2004
Messages
1,417
wat is an equation of the line that passes through the point (4,-6) and has a slope of -3??? some one plzzz help me those are the choices
y= 3x+6
y=3x+6
y=3x+10
y=3x+14
All the answers are in the "slope-intercept" form for writing a linear equation. We can start our problem, though, by putting the information we have into the "point-slope" form:

y - (-6) = (-3)(x - 4)

Rearrange this into slope-intercept form and you'll have your answer. (Note: You may have a typo in the answers you supplied, because none of them is correct; they all have the wrong slope. I'm guessing you typed the first answer without a negative sign.)

To understand slopes and linear equations better, check these sites out:

http://www.purplemath.com/modules/slope.htm

http://www.purplemath.com/modules/slopgrph.htm
 

nahlataher

New member
Joined
Jan 29, 2010
Messages
3
right i did type it wrong so its the first one with a negative sign right???
 

nahlataher

New member
Joined
Jan 29, 2010
Messages
3
so can u show me step by step plz???
 

Denis

Senior Member
Joined
Feb 17, 2004
Messages
1,284
nahlataher said:
so can u show me step by step plz???
Your teacher should do that during class.
 

Subhotosh Khan

Super Moderator
Staff member
Joined
Jun 18, 2007
Messages
18,091
nahlataher said:
so can u show me step by step plz???
Did you visit the suggested web-sites? You'll find problems solved step-by-step in there. Then come back and show us your work.
 
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