anonymous
  • anonymous
What is the slope of the line that passes through the points (2, 8) and (6, 12)? A. –5 B. –1 C. 1 D. 5
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Luigi0210
  • Luigi0210
Try using the slope formula: \(\Large m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \)
anonymous
  • anonymous
i don't understand that
Luigi0210
  • Luigi0210
\(\large (x_{1}, y_{1}) \) and \(\large (x_{2}, y_{2}) \) Match the coordinates with the formula \(\large (2, 8) ~~ (6, 12) \)

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More answers

anonymous
  • anonymous
OMG i don't understand what x1 y1 x2 y2 means
MrNood
  • MrNood
the two point s oyu have are (x1,y1) and (x2,y2) in this case x1=2 y1=8 x2=6 y2=12 put those numbers into the formula that @Luigi0210 gave you m is the answer for the slope...
anonymous
  • anonymous
wait so c?
MrNood
  • MrNood
is that a guess? care to show a little of your working?
anonymous
  • anonymous
(x1-x2) -------- (y1-y2) so 4/4=1. C.
anonymous
  • anonymous
@MrNood Yes?
MrNood
  • MrNood
good - that is correct |dw:1432832346785:dw|
MrNood
  • MrNood
oooops |dw:1432832488643:dw|
MrNood
  • MrNood
@ibacon BEWARE!! You have got the answer right in this case BUT you got the equation wrong You have the equation upside down (it is only correct here because it was 4/4) BE CAREFUL on other questions
MrNood
  • MrNood
see @Luigi0210 first answer for the CORRECT formula
anonymous
  • anonymous
What is the slope of the line that passes through the points (1, 7) and (–4, –8)? A. –3 B. Slope C. Irrational Numbers D. 3 so what is the x1 x2 y1 y2 and the equation? @Luigi0210 @MrNood
MrNood
  • MrNood
you are given the 2 pairs of points you probably know they are in the order (x,y) in the brackets It doesn't matter which one you choose as 1 or 2 as long as you are consistent with the formula try it yourself the same as the last one
anonymous
  • anonymous
okay. so.
anonymous
  • anonymous
(y1- y2) =4 -------- (x1-x2) = -6 4 minus -6 = 10
anonymous
  • anonymous
A. 1/3 B 3 C -1/3 D-3 10 is not here
MrNood
  • MrNood
no sorry that is very wrong (x1,y1) = (1,7) (x2,y2) = (-4,-8) be careful with the signs when oyu do the subtraction
anonymous
  • anonymous
i got it.
anonymous
  • anonymous
correct me if im wrong
anonymous
  • anonymous
(x1 -y1) =5 ------------ (x2 -y2) =15 5/15 = -3
MrNood
  • MrNood
several errors: FIRSTS AND MOST IMPORTANT - you still hav eth eequation upside dowm it is y1-y2/x1-x2
MrNood
  • MrNood
second 5/15 is not -3
anonymous
  • anonymous
ik its 0.333 which is 1/3.
MrNood
  • MrNood
let's start again (and look at my sketch from waaay above the vertical line is y2 - y1 so with you numbers what s y2 - y1?
MrNood
  • MrNood
the horizontal line is x2-x1 so with your numbers what is x2-x1?
anonymous
  • anonymous
-4 for the first y1 - y2
anonymous
  • anonymous
and 6 for x1-x2
MrNood
  • MrNood
no - that is not correct write out x1 = x2 = y1= x2=
MrNood
  • MrNood
(x1,y1) = (1,7) (x2,y2) = (-4,-8)
anonymous
  • anonymous
idek anymore
MrNood
  • MrNood
Look - don't despair - this is mainly jjust about notation and numbers Go back to what we are trying ot find - the SLOPE of a straight line |dw:1432835712744:dw|
anonymous
  • anonymous
its been an hour on 2 questions i give
MrNood
  • MrNood
take ANY two points on the line: |dw:1432835788766:dw| Are you staying or going????
anonymous
  • anonymous
i guess ill stay lol might as well
anonymous
  • anonymous
what - what? if you give me numbers i will understand what x1 x2 y1 y2 is
MrNood
  • MrNood
OK - now th eDEFINITION of the slope is the (change in y) ---------- (change in x) and that is shown in the drawing:|dw:1432835978112:dw| do you follow that?
anonymous
  • anonymous
ohh 1- -4? ---------- 7 - -8
MrNood
  • MrNood
YES those numbers are right BUT BUT BUT you GOTTA put the Y on top....
anonymous
  • anonymous
7 minus -8 ---------- 1 minus -4
MrNood
  • MrNood
correct and that equals???
anonymous
  • anonymous
3..

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