MathNeedsHelp91
MathNeedsHelp91 MathNeedsHelp91
  • 15-02-2017
  • Mathematics
contestada


What is an equation of the line?
A: y-4= 1/2 (x+2)
B: y-2- -3/8 (x+4)
C: y-1= 3/8 (x+4)
D: Y-2= -8/3 (x+4)
Please help me out

What is an equation of the line A y4 12 x2 B y2 38 x4 C y1 38 x4 D Y2 83 x4 Please help me out class=

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 15-02-2017
y-y1=m(x-x1)
is the equation of a line that passes through the pionts (x1,y1) and has a slope of m

find slope

slope between (x1,y1) and (x2,y2) is (y2-y1)/(x2-x1)
2 points are (-4,2) and (4,-1)
slope=(-4-2)/(4-(-4))=-6/(4+4)=-6/8=-3/8

the eqaution is either
y-2=-3/8(x+4) or
y+1=-3/8(x-4)


B is answer
Answer Link

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