Domain & Range
The way to find the range of a function is...
Use all y-values.
Vertically on the y-axis, the y-column of a table, or the y-coordinate of ordered pairs.
If the run of your rise/run is going backwards (left), your slope will be...
Negative
The x-intercept of a graph is also called...
Zero
When you see a tern connected to two other terms in the parenthesis such as 3(x+3), the first main step is to...
Distribute
(draw your arrows, and multiply by each term)
The proper name for y=mx+b is...
Slope-intercept form
An open circle at a starting point of domain or range means...
It is non-inclusive and will not have an underline
greater than > or < less than
Rate of change also means...
(name all 3)
m
slope
rise/run
A graph with only a straight vertical line is called
undefined
The inverse operation step of 5y=5 to get y alone would be...
divide by 5 (y=1)
the formula for when y is directly proportional to x is...
k = y/x or y=kx
(direct variation)
The domain or range of a dotted line contains set, individual numbers, while the domain or range of a solid line contains...
all real numbers (ARN)
What is the rate of change of the equation y=5x+9
5
A line that decreases from left to right is...
negative
4 + y = 2x +1 in slope-intercept form is...
y = 2x -3
The only extra step when solving inequalities is when you divide by a negative you must...
flip the symbol
The range of a of discrete graph that contains the following coordinates is (5, 10), (6, 15) and (7, 20) is...
range: [10, 15, 20]
The rate of change of 3y = -12x + 9 is
-4
A the y-intercept of the function y = 4x passes through...
the origin (0,0)
Two lines with the same slope and a different y-intercept, such as y=6x +1 and y=6x -9 are called...
parallel
The correlation coefficient of -.8 is ...
a strong negative correlation
An escalator starts at 0 feet and takes 18 seconds to reach the second floor at 32 feet high. The range of the escalator's height in relation to the number of seconds is...
0 to 32
written [0, 32] or 0 < y < 32
The rate of change perpendicular to the function y= 1/5x + 4 is...
y = -5
A function cannot contain more than one...
x-value
(or it is not a function)
After combining like terms in
y = -5x + 2 + x - 13
the simplified equation would be...
y = -4x -11
1 + 1
2