Download - Finding coordinates parabol,cubic
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Q2) Find the co ordinates A,B,C
Factorise :
( -3) ( -2)When y=0 ,( -3) ( -2) =0 =3 , =2
When =0, y = 0-0+6= 6
652 xxy
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Equation of a straight line is y= mx+c
m is the gradient , m=
m=
c is the y-intercept = 6
Equation is y= -2x+6
12
12
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23
6
03
60
Explanation: Factorise
( -3) ( +2)When y=0 , ( -3) ( +2) =0 =0 , =3 , =-2
(0,0)(3,0)(-2,0)When =0, y = 0(0-3)(0+2)= 0A=(-2,0); B=(3,0)
xxxy 623
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Equation of the given graph is Find the values of p and q -----1 =-5 =4
+5=0 -4=0
( +5)( -4)=0
------2Comparing the coefficients in 1 &2p=-1,q=-20
qxpxxy 23
(-5,0) (4,0)
x x
xx
xx
0202 xx
)( 2
23
qpxxx
qxpxxy