drking02
drking02
26-06-2017
Mathematics
contestada
What is the equation of this line? (-1,7) (2,-2)
Respuesta :
changg
changg
26-06-2017
Gradient= (y2-y1)÷(x2-x1)
= (-2-7)÷(2+1)
= -3
Subt the gradient into one coordinate point (2,-2)
Let 2 be x, -2 be y
Equation of line = y=mx+c
-2= -3(2) + C
therfore C is 4.
Equation of line is y=-3x+4
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