Linear Equations
Solve: x + 7 = 15
A: 8
Evaluate 2³
8
Factor: x² + 5x
x(x + 5)
f(x) = 2x, find f(3)
What is 6?
What is a system of equations?
What is two or more equations with the same variables?
Solve: 2x = 18
A: 9
Evaluate x² · x³
x5
Factor: x² + 7x + 10
(x + 5)(x + 2)
Given f(x) = 2x − 5, find x when f(x) = 9
What is x = 7?
What does it mean if a system has one solution?
What is the lines intersect at exactly one point?
Solve: 3x - 5 = 10
A: 5
Simplify (x + 2) + (x + 5)
2x + 7
Factor using GCF of 6x + 12
6(x + 2)
y = x + 4, find y when x = 5
What is 9?
Solve the system:
y = x + 2
x = 3
A: (3, 5)
Slope of (2,3) and (6,11)
A: 2
(x²)³
x6
Factor: x² - 9
(x - 3)(x + 3)
Identify the domain of:
y = x² − 6x + 1
What is all real numbers?
Solve the system:
x + y = 10
x − y = 2
A: (6, 4)
Write equation of slope 3 through (1,2)
A: y = 3x - 1
3x² + 2x² - x²
4x²
Factor completely: x² + 9x + 18
(x + 3)(x + 6)
f f(x) = 3x − 1 and g(x) = x + 2, find f(g(3))
What is 14?
A movie ticket costs $8 for adults and $5 for students. A group buys 10 tickets for $74 total. How many adult tickets were bought?
6 adult tickets (and 4 student tickets)