Variation
What does a direct variation look like on a graph?
straight line through (0, 0)
All the x values of a function is called ________________.
domain
What should you do if you get a word problem in the beginning of your SOL?
Skip it and come back later
Which value of x makes this equation true
12x-20=2x
2
Which number is a zero of the function h?
h(x) = x2 + 3x - 18
-6 or 3
What does difference mean?
Subtration
Karen drove 160 miles in 4 hours and then she drove 80 miles in 2 hours.
Direct or Inverse Variation?
inverse
What is the domain of the relations shown?
{(-2, 3), (0, 4), (1, 1), (6, 0)}
{-2, 0, 1, 6}
If you are feeling like you are in a haze or zoned out, you should do which of the following: push through, take a small break, guess and keep moving forward
take a small break
What are the real roots of x2-7x+10=0
2 and 5
Which of the following binomials is a factor of x2 - x - 6?
(x-1) (x-2) (x-3) (x-6)
(x-3)
What does Quotient mean
Division
Vernon cooked 6 hamburgers in 10 minutes, and then he cooked 9 hamburgers in 15 minutes.
Direct or Inverse Variation?
direct
If f(x) = (x - 3)2 + 1, what is f(6)?
10
Given a multiple choice question, how can you increase your chance of selecting the correct answer?
Eliminate wrong answers immediately.
Slash the trash
Write an equation represents a horizontal line passing through (7,5)
y=5
What are the solutions to
-x2 - 2x + 8 = 0?
-4 and 2
What is the ordered pair (0,0) called
Origin
10 = xy is ___________ variation.
inverse
What is the range of this relation?
{(-1, 8), (4, -2), (-2, 4)}
{-2, 8, 4}
What do you put into desmos to find the line of best fit
y1~mx1+b
What is the solution to the system
2x-6=2y
3-2x=y
x= 2 y =-1
What are the roots of the equation
3x2 + 11x = 20?
-5 and 4/3
What does m and b represent
Slope and Y-intercept
The driving time varies inversely with the speed of the car. If it takes Sam 6 hours to drive to college at 60 miles per hour, how long will it take him to drive the same distance at 72 miles per hour?
5 hours
Is {(-3, 3), (5, 5), (-3, 2), (5, 3)} a function?
no because -3 is repeated in the x values
What should I do the night before the SOL and the morning of the SOL
good night sleep, eat something in the morning
What is the slope of a line that passes through (-2,5) and (3,9)
4/5
Which equation could represent a graph with x-intercepts of (4, 0) and (-7, 0)?
y = x2 + 3x - 28 y = x2 - 3x - 28
y = x2 + 3x + 28 y = x2 - 3x + 28
y = x2 + 3x - 28
Roots, zeros, and solutions are the same thing as __________________.
x-intercepts