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39 Cards in this Set
 Front
 Back
Lines will NOT intersect at all 
Parallel lines NO SOLUTION 

Lines intersect at ONE point 
One solution 

Lines ON TOP of each other 
Infinite Solutions 

Slope 
Rise / run 

y2  y1 / x2  x1 
Slope formula 

y = mx + b 
Slope standard form 

DIRT 
D = rt 

Domain 
Inputs or the X values 

Range 
Output or the Y values 

Line of best fit 
Drawn through scatterplots to describe relationship between two variables (x,y)
Reflects the trend 

x0 
Y intercept aka b 

k 
Rate of slope aka m 

y= kx + x0 
Linear growth 

y = x0 (1 + r) ^ x 
Exponential equation 

Standard Deviation 
How far a typical data point is from the mean.
High means spread out. Low means close. 

Margin of Error 
Max difference between true value and random sample value 

Skewed to the LEFT 
Tail is longer on left side 

Skewed to the RIGHT 
Tail is longer on right side 

Probability 
# desired outcomes/ # total possible outcomes 

a^b x a^c = 
a ^ (b+c) 

a^b / a^c = 
a^ (bc) 

(a^b)^ c = 
a^ (bc) 

a^ b = 
1/ a^b 

Simple zero 
Occurs once in a polynomial 

Important for long division 
Don't forget place holders 

Work = ? 
W= rt 

f(x) 
Dependent variable output aka y 

k 
Rate of change/ slope aka m 

f(x) = kx + f(0) 
Standard form linear equation 

f(0) 
y intercept or b 

g(x) = g(0) (1+ r)^x 
Growth or decay formula 

(f+g)(x) = 
f(x) + g(x) 

(fg)(x) = 
f(x) g(x) 

(fg)(x) = 
f(x) • g(x) 

(f/g)(x) = 
f(x) / g(x) 

(f o g)(x) = 
f(g(x)) 

y= ax^2 + bx + c 
y intercept is c 

y= a(xm)(xn) 
Solution = m and n X intercepts 

y = a(xh)^2 + k 
(h,x) is vertex 