Systems of Equations
y=5x+30
y=2x
(-10,-20)
(2x3)(5x4)
10x7
sqrt 75
5 sqrt 3
-2x+8=-x+7
1
Find the common difference of the arithmetic sequence
14, 5, -4, ...
-9
y=2x-6
y=-x
(2, -2)
x-5y4
y4/x5
4 sqrt 6 + 10 sqrt 6
14 sqrt 6
-5x+7 > -9x-1
x>-2
(3x+7) / (x+3) = 7 / 2
-7
5x+3y=-16
-10x-3y=11
(1, -7)
(2x3y7)3
8x9y21
3 sqrt 6 - sqrt 96
- sqrt 6
-5x-(-2x-8)=-x-6
7
-9 > -3x-3 > -24
2 < x <7
x-6y=-35
-7x-6y=-43
(1, 6)
((x4y5)2) / y3
x8y7
5 sqrt 72 - sqrt 98
23 sqrt 2
3+3(4b-9) > 9b-3-3
b>6
-7y - 2 - 4x - 2y + 6x + 6y -2
-3y - 4 + 2x
-5x+8y=-21
3x-4y=15
(9, 3)
((3x2)(4x5)) / (3x9)
4/x2
sqrt 25x13
5x6 sqrt x
20 = |x+21|
-1 and -41
f(-3) if f(x) = -4x2 + 8x + 11
-49