Simplifying
Simplify the expression by combining like terms: -5a + 4b + 7 - 2a + b
-7a +5b + 7
Solve -7x - 5 = -3x + 3
x=-2
Is the relation a function?
{(-4, 3), (-5, 2), (0, -4), (-5, -9)}
No (input -5 has two different outputs).
Looking at the coordinate grid, what are the coordinates of point F?
(0,-3)
Which number is the exponent? 5x7-4xy+9
7
Simplify 3x2 - 4x - 6x2 - x
-3x2 - 5x
3(x - 4) = 15
x = 9
Given the set of ordered pairs, identify the range:
{(1, 30), (2, 15), (2, 20), (4, 20)}
{15, 20, 30}
State the coordinates for point D?
(-2, -4)
Which number is the constant? 5x7-4xy+9
9
-2(x-7)
-2x + 14
10 - 3x - 5x = -8x + 9 + 1
infinite solutions
Consider the four graphs. Which of these relations is a function?
top left (passes the vertical line test)
Which point is the y-intercept?
{(5, 0), (-4, -5), (-3, 2), (0, 9)}
(0, 9)
What is the domain of a relation?
All of the possible x-values.
Simplify 3|5 - 7|
6
|x - 1| = 3
x = 4, -2
Find f(2) for f(x) = -3x - 2
f(2) = -8
The story graph represents a bike ride you take after school.
Looking at the story graph, what does the horizontal lines represent?
It represents a time period where you are NOT moving (maybe you stopped to each lunch or talk to a friend).
When solving an equation and you get down to 4 = 0 what does this mean?
There are NO SOLUTIONS to the equation.
Simplify (4-5)2-10/2(5)
-24
x = 5
10 2
x = 25
What are two reasons that a relation would not be a function?
1) fails the vertical line test
2) an input has more than one output
State the x-intercept (as a coordinate point) and explain what it means in the context of the problem from its graph.
(18, 0) - The hiker reached the canyon floor in 18 minutes.
When solving an absolute value equation three possible number of answers are possible. What are they?
0 (no solution; absolute value is equal to a negative number)
1 (absolute value equation is equal to 0)
2 (absolute value equation is equal to a positive number)