I GIVE MEDALS!!!!!!!!!!!!!!!!! Which is an equation in point-slope form of the line that passes through the points (7,5) and (-4,-1)
point slope form : \[y - y_{1} = m(x - x_{1})\] \[m = \frac{ y_{2} - y_{1} }{ x_{2} - x_{1} }\] \[m = \frac{ (-1) - (5) }{ (-4) - (7) }\]
can you do the rest @sammy34daisy ?
can u still help not quite sure never learned this
m= -6/-11
y = mx + b slope (m) = [5-(-1)]/[7-(-4)] = 6/11 or 0.545 Y = (6/11)x + b plug in one of the points, solve for the intercept -1 = (6/11)(-4) + b b = -1 -24/11 = -35/11 = -3.182
I have to go, sorry. Just solve for m, then plus that into the equation as well as y1 and x1
i dont understand
@judygreeneyes , that is slope-intercept form not point-slope
True -- y – y1 = m(x – x1) is the way you would get the slope, but to solve for m, you still need to rearrange and solve for m = (y-y1)/(x-x1) so to me they end up the same.
m= -6/-11
|dw:1389388997386:dw|
almost there but the term (x-1) is not quite right - check it again plz? :)
(x+1)
y + 5 = 6/11(x + 7)
still no....its for x1 remember...
(x+4)
sorry, "-" not "+" y - 5 = 6/11(x - 7)
I think you want an x value in the 2nd part y-(-1) = (6/11) (x-(-4))
yup yup u got it...now simplify n u will get the final answer :)
y+1=6/11(x+4)
questions said slope-point form so u got it :)
Right, you can use either (x,y) point to find the intercept now that you have the slope. y-5 = (6/11)(x-7) works also
Good job @sammy34daisy!
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