Algebraic and Verbal Expressions
True or False.
A negative times a negative is a negative
False. (-) x (-) = +
Evaluate.
4 + 52 * 2 - 7
47
Simplify 4m2 - 12m2 + 5n3
-8m2 + 5n3
True or False.
A function sends an input to exactly one output.
True
The graph of a function is positive when ________.
The graph is positioned above the x-axis.
Write an algebraic expression.
Two times x squared minus five times x.
2x2-5x
Evaluate.
1 + 3(16 - 32) + 24/6 -1
25
Simplify. -3(6x + 4y - 8y)
-18x + 12y
True or False.
A vertical line passes the Vertical Line Test.
False.
A graph is decreasing when it goes ____ from left to right.
down
Write an expression (in sentence form).
3n - 8
*Answers may vary.
*8 less than the product of 3 and n
* 3 times n minus 8
Evaluate.
42 + 4( 18/2 - 32)
16
Combine like terms
3(5j + k) + 4(j + 2k)
19j + 11k
If there is a repeated x value in an input/output table, the relation is _________
Function or Not a Function?
Not a Function
If a graph is positive for x < 0 and x > 5,
when is it negative?
x>0 and x<5
0<x<5
Write an algebraic expression.
Seven less than twice m.
2m-7
(-3(-10) + 4(2))/(-6 -(-5))
-38
If g(x)= 5x + 7, find g(-5).
-18
(-5,-18)
Given the relation {(4,1), (4,-3), (2,-3), (3,5)}, what is the domain and range?
Domain: {2,3,4}
Range: {-3,1,5}
A graph increases before x=0 and decreases after x=0. How would I write the notation for this situation?
Increasing: x<0
Decreasing: x>0
Half the difference of x and 6.
1/2x-3
93
If f(x)= x2 + 2x -1, find f(8).
79
(8,79)
True or False.
A function can have two different x values map to the same y value.
If a graph is never decreasing, then it is increasing for _______.
All Real Numbers