Radicals, evaluating, and verbal expressions
5 times the square root of 2
Solve: 7 - 2x = 21
x = -7
Solve: 4x - 4 > 28
x > 8
Is the following Relation a Function?
{(-3,4), (0,0), (-3, 2), (1, 4)}
No - The x-value of -3 repeats.
Evaluate the expression: |x - 5y| where x = -3 and y = 1
8
6x + 4 = 2x - 20
x = -6
Solve: -4x + 9 < 2x - 15
x > 4
Given the function h(x) = -2x + 1, find h(-3)
h(-3) = 7
Simplify: The cube root of -729
-9
8(x + 1) = 6x + 48
x = 20
-2(4x + 1) > 48 + 2x
x < -5
How can you tell if a relation is a function based on it's graph?
Use the vertical line test. If it hits the graph at more than one point, the graph is not a function.
Translate into an Algebraic Expression:
7 more than a number squared is 43
x^2 + 7 = 43
6(x+2) = 6x + 10
No Solution
Which numbers are solutions to the following inequality:
-x + 5 > -15 - 5x
-5, -4, -6, 0, 3, -10, 1
-4, 0, 3, 1
Given the function h(x) = -2x + 1, find x when h(x) = -9
x = 5
5sqrt(40) - 7sqrt(90)
-11sqrt(10)
Ms. Pearl had 3 times the amount of money as Mr. L. If they had $900 all together, how much did each of them have?
Mr. L had $225 and Ms. Pearl had $675
Brenton pays for Xbox Live as a one-time purchase of $50. He also buys video games for $69.99 each. If he has $275 to spend, how many video games can he buy?
3
Find all the zeros and y-intercepts of the following function:
f(x) = x^2 - 6x + 8
zeros: (2,0) and (4,0)
y-intercept: (0,8)