367 Words2 Pages

Midpoint formula used for 1-6
(x1+x22 , y1+y22)
(1,4); (5,6)
( 1+52 , 4+62)
(3,5)
(4, 6); (-2, -2)
( 4-22 , 6-22)
(1, 2)
(3, -4); (5, 4)
( 3+52 , -4+42)
(4, 0)
(5, 4); (3, -4)
( 5+32 , 4+ -42)
(4, 0)
A= (1, 2), M=(5, 8)
5=1+x2
1+x=10
x=9
8=2+y2
16=2+y
y=14
B=(9, 14)
A = (-2, -1), M= (0, 0)
0=-2+x2
-2+x=0
x=2
0=-1+y2
-1 + y=0 y=1 B=(2, 1)
Distance Formula used for 7-10; d=x2-x12+y2-y12
(4, 6); (-2, -2)
d=-2-42+-2-62 d=(-6)2+-82 d=100=10
(3, -4); (5, 4) d=5-32+4+42 d=22+82 d=4+64 d=+68 8.3
(-3, 2); (6, 0) d=6+32+0-22 d=92+-22 d=81+4 d=85 9.2
A (0, 0) B (5, y), d=3
3=5-02+0+y2
9=52+y2
-16=y2
Â±4=y
Slope Formula used for 11-19; m=y2-y1x2-x1
(4, 6) (-2, 2) m=-2-6-2-4 m=-8-6=43
(3, 4) (5, 4) m=4+45-3 m=82=4
(-3, 2) (6, 0) m=0-26+3 m=-29
(6, 0) (-3, 2) m=2-0-3-6 m=2-9
m=y2-y1x2-x1, (4,0) (0, y)
-12 =y-00-4
-12=y-0-4
-24=y-04
-2 =y
A 3, 0 B 0, 3 y=mx+b; m=y2-y1x2-x1 y=y2-y1x2-x1x+b y=3-00-3x+b y=-1x+b 3=-1x+b
3=b
y=-x+3
(0, 0) (4, 4) y=4-04-0x+b y=1x+b
4=4+b
b=0 y=x=0 (1, -3) (1, 5) y=5+31-1x+b y=(80)x+b y=0x+b x=1
(1, -2) (3, 4) y=4+23-1x+b y=62x+b y=3x+b 4=3x+b
-5=b
y=3x-5
0=3x-5
5=3x
5/3=x
x-intercept (5/3, 0)
y=(3)0-5 y=-5 y-intercept (0, -5)
Triangle with points: (2,1) (8, 5) (8, 1)
Area of Triangle with points (-1, 0) (1, 3) (-2, 5)
A= bh/2 d=x2-x12+y2-y12 d between -1, 0 & 1, 3=1+12+3-02=9+4= 13
d

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