FUNDAMENTAL PROOF OF THE CENTRAL
POINT AND ITS SLOPE
At central point (xg,
yg) in the ordered pair (X,
Y) of straight line equation Ax+By=C,
the formula for xg and yg are given as;
Xg = C/2A
Yg = C/2B
PROOF!
Given Ax+By=C,
the central pair can proved by equally pairing x to y.
i.e Ax = C-By………(1)
By = C-Ax……(2)
Equating Ax in
equation(1) to C-Ax in equation (2),
we have
Xg = C/2A
Also, equating By
in equation(2) to C-By in equation
(1), we have
yg = C/2B
THE SLOPE
At central point, the slope of straight line equation Ax+By=C is given as m = -yg/xg where xg and yg denoted as central point
pairs and m denoted as slope.
PROOF!
Given Ax+By=C,
the slope of the straight line can be determined by moving term Ax to right hand side and divide both
side by the constant B
Y = -(A/B)x + C/B
But let m=-A/B(slope)
and b=C/B(intercept), hence we have
Y = mx+b……..(1)
Equally pairing m to y, we have
Y = mx+b…….(2)
-mx = b-y……(3)
Equating y in eqn(2) to b-y in eqn(3), we have
Y = b………(4)
Also, equating –mx
in eqn(3) to mx+b in eqn(2), we have
M =-b/2x……..(5)
Putting eqn(4) into eqn(6), we have
M= -y/x or
m= -yg/xg: hence proved!
REFERENCE
*Adongo Ayine William(Me), Transcript(2008), Posted(EMS-Bolga Branch) to Mathematical Association of Ghana (Tittle: New Mathematical Concept.....) in the Year 2008.
REFERENCE
*Adongo Ayine William(Me), Transcript(2008), Posted(EMS-Bolga Branch) to Mathematical Association of Ghana (Tittle: New Mathematical Concept.....) in the Year 2008.