Hi,
Please keep these formulas for reference:
D =
( -1,-1)
( 3, -7) D =to the nearest hundredth
Midpoint Pt(x,y): (, )
( 8,-4)
( -7,8) M = (1/2,2)
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y + x = -2 OR y = (-1/1)x-2
y - x = -2 OR y = (1/1)x-2 Lines are perpendicular: Solpes negative reciprocals
y = 3x + 9 |slope m = 3 and y-inteecept is Pt(0,9)
point-slope formula,will come in handy as well
x^2 - x - 72 = 0
factoring
(x-9)(x+8)= 0
(x-9)=0
(x+8)= 0 x = 9 and x = -8 are the solutions