The variable k in this Direct variation equation, y = kx
What is the Constant of Variation?
100
The input/independent number in a relation.
What is domain?
100
The formula D = RT.
What is Distance = Rate x Time?
200
× and ÷
What is multipication and division?
200
The variable b in the equation y=mx+b.
(It is the name of a line which crosses the y-axis of a graph)
What is the y-intercept?
200
The graph point (0,0).
What is the origin?
200
The output/dependent number in a relation.
What is Range?
200
D = 100, Rate = 25, Time = t. 100=25t
t= ___
What is t = 4?
300
< and >
What is less than and greater than?
300
This equation is used to determine the slope of the line on a graph using two ordered pairs.
What is Y2 – Y1 ÷ X2 – X1?
300
When a line is moving from the lower left of the graph toward the upper right of the graph.
What is increasing line / slope?
300
The number -1 and -2 in these ordered pairs
(-1,-4), (-2,-6).
What is the Domain?
300
A symbol (usually a letter) which stands for something we don’t know
What is a variable?
400
≤ and ≥
What is less than or equal to and greater than or equal to?
400
(x,y) (x,y)
(think about what is needed for solving the equation for slope and what we call these when we are locating points on a graph)
What is an ordered pair?
400
The Constant of Variation for y = 1599x.
What is 1599?
400
Find the range by using the function rule
f(x) = 2a+5 for the domain {2}.
(22 seconds)
What is Range f(2)=9?
400
A Direct variation equation where we substitute x = 5 and y = 10 and then solved.
y = kx
(22 seconds)
What is 10=k*5 --> 10/5=k*5/5-->
2=k
500
This acronym stands for Parentheses first, Exponents (ie Powers and Square Roots, etc.), Multiplication and Division (left-to-right) and Addition and Subtraction (left-to-right)
What is PEMDAS?
500
y=mx+b.
What is the equation for slope?
500
y = kx
What is equation for direct variation?
500
The range numbers from the following ordered pairs.
{(-1,-4), (-2,-6),(3,-3),(9,5),(6,8)}