Unit 1-4 Flashcards
Correlation Coefficient
-1,+1,0; how strong a relationship between two variables is
Horizontla translations
-Inside and opposite
Ex; f(x+4); left 4
What is the Reflection across x axis
- Takes y values and flips it
- Outside the absolute value/paranetheses bars
Ex: -|x|
What is the reflection across the y-axis
- takes x values and flips it
- Inside f(x)/ f|x|
Ex; _(-x)2
Vertical Translations
- outside f(x)
- exact
Ex; f(x)-4; 4
Stretch across the x-axis/ Horizontal stretch
- Inside f(x)
- Opposite
- a<1
Ex; |5x|; horizontal stretch 1/5
Stretch across the y-axis/ Vertical stretch
- Outside f(x)
- Exact
- a>1
Shrink across the x-axis/ Horizontal shrink
- Inside f(x)
- Opposite
- a>1
Ex; |1/5x|; horizontal shrink 5
Shrink across the y-axis/ Verical shrink
- Outside f(x)
- Exact
- a<1
Ways to solve quadratic
Square roots, factoring, Solving by the comp;eting of square, Vertex form
i2 is equal to….
-1
When multiplying square roots what is the first thing you look for and do…
Simplifying them
What helps with solving square roots?
factoring tree
How to distinguid what type of polynomial?
Look at the largest degree (n)
What caluclator function makes finding f(x) easier?
Crtl =
What is an end behavior?
How does the end arrows of a grpah look like
What determines the ned behavior?
Degree and sign of the leading coefficient
What makes a plolynomail?
- monomial/sum of monomials
-exponents are whole #’s not negative or 7/x
Solving 2 by 2’s steps…
- Eliminate a variable by using 1 & 2
- then use 2&3 - then solve the newly 2 by 2’s
- to find out the variable that is left to be solved, plug the variables found in the 2 by 2, in the og equation
Factorings, types
- GCF/ GMF
- (x2 + bx +c)
- DOS… DOC’s
- Factor by Grouping
DOC’s
Difference of cubics
DOC ‘s
Difference of squares
Finding the vertex in intercept form..
- The formula that gives x-intercepts,
- Find the vertex by x=p+q/2
