Formulas
In the formula, y = mx + b , what letter represents the slope?
m
What is an intercept?
It crosses either the x axis or y axis
Identify the slope of the following equation. y = 2x + 3
2
What is the center of the graph called?
The origin
What is an arithmetic sequence?
A sequence formed by constant addition
In the formula, y = mx + b , what does the b represent?
the y-intercept
What do you plug into equations to find an intercept?
0
What kind of slope gives you an error on the calculator?
Undefined or Vertical
What makes a "Graph" proportional?
It's straight and through the Origin
Find the next 3 terms of the following sequence: -21, -15, -9, . . .
-3, 3, 9
What is the Formula for Standard from
Ax + By = C
What is the y-intercept in the following equation?
y = -4x - 2
-2
You are asked to graph the equation y = -2x + 5. After you graph the y-intercept, describe how you move graph the slope.
Move down 2, then right 1.
What is slope of a Horizontal Line?
0
What do the "a1" and "d" stand for when doing arithmetic sequences?
a1 = first term, d = common difference
What is the slope formula?
m = y2 - y1 / x2 - x1
What is the importance of finding the intercepts? What they can tell you or help you do?
They can help you either graph and equation, or describe a graph
What is slope intercept form?
y = mx + b
Put this equation in standard form: 8 + 4y = 16x
-16x + 4y = 8
How do you actually prove something in an Arithmetic Sequence? What would make something NOT arithmetic?
Has to be constant addition. No breaking pattern, no multiplication.
What is the Formula for the Nth term?
a1 + (n-1) * d
Find the X and Y intercepts from the following equation:
2x + 4y = 12
x = 6
y = 3
There are 5 different ways we used to describe slope. Name 3 of them!
Possible answers: (1) rate of change, (2) rise over run, (3) y = mx + b, (4) m, (5) slope formula y2 - y1 / x2 - x1
Is x = 2 a solution to the equation 2(x - 5) + 3 = 13 ?
No it is not a solution.
Find the 73rd term in the following sequence: 6, 10, 14, 18 . . .
Hint: Formula = a1 + (n-1) * d
294