point slope form
(y - - 3) = -1/2 (x-2)
or re-arrange to"
y = -1/2 x -2
Isn't it just 10% ?
x from -8 to 2 is distance of 10 2/5 of this distance added to -8 = -4
y 6 to 5 is a distance of -1 2/5 of this added to 6 = 5 3/5
60% + 25% = 85 % that means 15% were 'other'
.15(60) = 9 'others'
Factors of -12 that when added = positive k (note that k has a negative sign in front of it in the equation)
1 -12 added together = k = (-) 11
2 -6 (-) 4
3 - 4 (-) 1
example : (x+1)(x-12) = x^2 -11x -12 k = 11
11 + 4 + 1 = 16
It is a dome shaped parabola so the x^2 coefficient must be negative so either a or d
at x = 0 a will not work but d does ! You got it correct !
If they have the same slope and y -intercept they are the SAME lines.....
Area pf rectangle + area of triangle = total area
10 x 8 + 1/2* 6 *8 = area in m2
Yes 2x^2 + x is the same as 2x^2 + (1)(x) BUT x does not necessarily = 1
25 % off means you pay 75% of the original price .75 ($40)
then add tax .75(40)(1.10) = $ ......... final price
