Equations
Solve: x + 9 = 14
x = 5?
Solve: x – 4 > 6
x > 10?
A relation is a function if each input has only one ________.
output
What is the slope of this equation?
y = –2x + 7
-2
Solve by substitution:
x + y = 10
x = 6
(6, 4)
Solve: 5x = 35
x = 7
Solve: 3x – 5 ≥ 10
x ≥ 5
Determine if it’s a function:
{ (2, 5), (3, 8), (2, 7) }
No
Find the slope between: (1, 4) and (3, 10)
3
Solve by elimination:
x – y = 3
x + y = 11
(7, 4)
Solve: 4x – 3 = 21
x = 6?
Solve: 7 – 2x < 1
x > 3
Evaluate: If f(x) = 3x – 2, find f(4).
10
Identify the y-intercept of:
y = 5x – 9
-9
Solve the system:
2x + y = 7
x – y = 1
(2, 3)
Solve: 3(x + 2) = 27
x = 7?
Solve: –4(x + 2) ≤ 8
x ≥ –4
Identify the domain of:
{ (–1, 2), (0, 4), (3, 7) }
{–1, 0, 3}
Write the equation of a line in slope-intercept form with slope –1 through (2, 6).
y = –x + 8
How many solutions does a system have when the lines are parallel?
No Solutions
Solve: 7x – 5 = 2x + 20
x = 5?
Solve compound inequality:
–1 ≤ 2x – 5 < 7
1 ≤ x < 6
A function has slope 4 and passes through (1, 2). Write its equation in slope-intercept form.
y = 4x – 2
Convert to slope-intercept form:
4x – 2y = 10
y = 2x – 5
Solve by elimination:
3x + 2y = 16
5x – 2y = 4
(2, 5)