Name of Calc. Skill
When do you use this equation?
y1~mx1+b
Linear Regression -
In order to find your y intercept and slope
In order to use your regression equation on desmos for a LINEAR regression, what do you need to have?
A table/graph
or Two points !! (X1,Y1) (X2,Y2)
What is the solution to 4(y - 3)+19 = 8(2y + 3) +7
y = -2
-3x + 9y = -21
-3x + 8y = -18
(-2,-3)
How do I find the factors of (A)(C) when I factor on desmos?
Factor/x
Settings
Table
combine the tables together
ex: x + factor/x
How do you get to equation solver?
MATH
UP ARROW
B: Solver
In What form do your system of equations need to be in, in order to use MATRICES?
Standard form
AX + BY = C
What is the equation IN SLOPE INTERCEPT FORM of the line that passes through the points (-26, -11) and (39, 34)?
y = 9/13x + 7
What is the solution to the system of equations below?
-x - 6y = 38
-2x +2y = -8
(-2, -6)
When I have exponents like this,
what operation do I do?
(x4y5z9)3
Multiplication
What are the steps to use matrix?
2nd Matrix
MATH
UP ARROW
TYPE 2 X 3
ENTER DATA
EX: 1 2 3
4 -5 6
2nd QUIT
2ND MATRIX
MATH
UP ARROW
B: rref
2nd QUIT
2nd MATRIX
ENTER
ENTer
How many points do you need to use the QUADRATIC regression on desmos?
Y1 ~ ax12+ bx1+c
Y1~a(x1-h)2+K
Y1~a(X1-p)(X1-q)
3 POINTS
one may be your vertex and your two zeros.
OR
just three points
Is the ordered pair (-3, 5) in the solution set of this equation?
8x + 16y > 32
Yes
Solve the following system of equations. What is the value of x ?
-x + y = -10
10x +8 = y
x = -2
Anything to the power of zero is equal to what?
ex: x0
ONE!!!! 1!!!!!
How would I shade this equation on my ti-84 calculator?
Y > 2x+1
Y =
type your equation
Move all the way left and click enter until you get your triangle on top.
In order to use equation solver, what does our equation have to be equal to?
ZEROOOO
Solve
-6x + 3y = -15
4x - 3y = 13
(1, -3)
What is the solution of the following systems?
5x - 9y = -24
y = -2x - 5
(-3, 1)
The slope or parallel lines is _____
While the slope of perpendicular lines is _____
SAME ; OPPOSITE RECIPROCAL
In case something goes wrong and my calculator has too much in it and I want a clean slate. How do I clear my calculator?
2ND
+
7
1
2
What are the formulas to calculate the common ratio when given the rates of exponential decay/growth
Y = a(1-r)x or Y = a(1+r)x
-2x - 5y = 7
2x + 5y = -7
All real numbers
What is x ?
-10x + 6(-x + 3) = -(6x - 6) - 7x
x =4
What is the exponential regression formula to plug into desmos?
y1 ~ abx1