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 Flashcards Matching Hangman Crossword Type In Quiz Test StudyStack Study Table Bug Match Hungry Bug Unscramble Chopped Targets

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# MATHYy

Domain x variables. D={x|x...,x E R}
Range y variables. R={y|y...,y E R}
Restrictions are needed for rational expressions
Restrictions can be taken from 2nd last step from the 2nd numerator and both denominators
Radicals have root sign and a number underneath
Fxn or not: x^2 + y^2 = 5 no, its circle formula, it fails vertical line test
Fxn or not: y = 5x - 7 yes, basic parabola, U shape
Fxn or not: -1/x + 2 yes, reciprocal fxn, 2 pairs of curved fxn <|>
Fxn or not: y=2/root -x + 1 unroot + 4 yes, square root fxn, half sideways parabola, /--
Fxn or not: y = sinX - 3 yes, wavy pattern
Fxn or not: y = coxX + 8 yes, wavy pattern
y = af[k(x-p)] + q, what does A<0 do? reflection in the x-axis, because X is first
y = af[k(x-p)] + q, what does A do? vertical stretch or compression by a factor of A
y = af[k(x-p)] + q, what does F do? nothing, its just there
y = af[k(x-p)] + q, what does K<0 do? reflection in the Y-axis, because Y is second
y = af[k(x-p)] + q, what does K do?* horizontal stretch or compression by a factor of 1/K
y = af[k(x-p)] + q, what does X do? nothing, its just there
y = af[k(x-p)] + q, what does P do? translate left(+), translate right(-)
y = af[k(x-p)] + q, what does Q do? translate up(+), translate down(-)
What is the discriminant? b^2 - 4ac
b^2 - 4ac > 0 2 real roots because it passes x-axis completely
b^2 - 4ac < 0 2 different complex roots OR no x-int
b^2 - 4ac = 0 only 1 real same root, 2 equal real roots
Inverse is what? y = x, switch the X and Y coordinates
What is a Family in quadratics? y = a(x+_)(x,has the A variable
Created by: bioger