What variable will you substitute in the problem below?
y = 2x
3x + y = 5
y
What variable will you eliminate in:
x + 8y = 20
−x + 2y = −30
X.
6x ⋅ 7x
49x^2
What is the GCF of 24 and 18?
6
Solve by graphing:
y= -5/3x +3
y= 1/3x - 3
(3,2)
Solve using substitution:
y = 2x + 5
y = -3x + 10
(1,7)
Solve using Elimination:
2x + 3y = 11
-2x + 5y = 13
(1,3)
5x2 (3x -9)
15x3 - 45x2
Factor:
45x + 70
5(9x + 14)
What is the definition of a solution in a system of equations?
Where the lines intersect.
Solve using substitution:
x + 4y = 16
3x + 4y = 8
(-4,5)
Solve using elimination
-2y + 7x = 5
-3y + 7x = 4
(1,11)
(-3x - 8)(-6x2 + 4x)
18x3 + 36x2 -32x
Factor:
48x5 - 36x3
12x3(4x2 - 3)
Write an equation for 2 lines, 1 parallel and 1 perpendicular to:
y= -4x + 18
Answers will vary.
Solve using substitution.
-y = -5x + 11
x – 3y = -9
(3,4)
Solve using elimination
18x – 12y = 42
-6x + 8y = 2
(5,4)
(3a2 + y + 1)(8a + 2y)
24a3 + 8ay + 8a + 6a2y + 2y2 + 2y
Factor:
16x3y + 12x2y – 4xy
4xy(4x2 + 3x – y)
Simplify:
(2x + 5)(x – 7)(x – 3)
2x3 – 15x2 – 8x + 105