System of Equations
Solve by Substitution:
y=6x-11
-2x-3y=-7
(2,1)
The line parallel to 4x + 2 that goes through (3,1)
y = 4x-1
Whats the equation for the axis of symmetry
-b/2a
FOIL:
(x-11) (x-10)
x^2-21x+110
Solve by Elimination:
-3x-3y=12
-9x+3y=-24
(1,-3)
The line parallel to 5x + 6 that goes through (3,8)
y= 5x -37
What are the 4 parent functions?
Absolute value, quadratic, square root, linear
What are 4 methods of factoring?
GCF, Foiling, D.O.T.S, Substitution
Solve by Elimination
2x+y=5
x-y=4
(3,-1)
The line parallel to 7x +6 that goes through (9, 5)
y = 7x -26
Does a negative parabola open up or down?
Down
Factor out the GCF
9x+36
9(x+4)
Solve by Substitution:
2x-3y=-1
y=x-1
(4,3)
The line parallel to 2x + 4 that goes through (5,7)
y = 2x -9
What shape is the quadratic parent function on a graph?
U-shape
Factor completely:
2n^2+3n-9
(2n-3) (n+3)
Solve by Substitution:
y=5x-7
-3x-2y=-12
(2,3)
The line parallel to 4x + 9 that goes through (8,4)
y = 4x-8
What's the easiest way to identify a function?
Vertical line test
Factor completely:
4n^2-17n+4
(4n-1) (n-4)