practice with quick sketches
DESCRIPTION
Practice with Quick Sketches. Last Class…. Vertical Line Test Quick Sketches of 6 Important Functions. Learning Targets. By the end of class, students will be able to: Quick sketch 6 common functions Use shifting to move graphs. Shifting. Two Types of Shifts Vertical shifts: Up and down - PowerPoint PPT PresentationTRANSCRIPT
Practice with Quick Sketches
Last Class…O Vertical Line TestO Quick Sketches of 6 Important
Functions
Learning TargetsBy the end of class, students will be able to:O Quick sketch 6 common functionsO Use shifting to move graphs
ShiftingO Two Types of Shifts
O Vertical shifts: Up and downO Horizontal Shifts: Left and Right
Vertical ShiftsO A VERTICAL SHIFT is given by a +/-
constant next to the variable termO Examples:
O f(x) = x + 3Compared to our quick sketch of f(x) = x, the graph is shifted 3 units UP
Vertical ShiftsO Whether the shift is UP or DOWN
depends on the sign in front of the numberO Positive: Graph shifts UPO Negative: Graph shifts DOWN
Horizontal ShiftsO A HORIZONTAL SHIFT is given by a
+/- constant inside the parenthesis or radical sign
O Example: f(x) = (x – 3)2 Compared to the quick sketch of the function f(x) = x2, the sketch of our function is moved 3 units to the right.
Horizontal ShiftsO Whether the shift is LEFT or RIGHT
depends on the sign in front of the numberO Positive: Graph shifts LEFTO Negative: Graph shifts RIGHT
“Flipping”O When there is a NEGATIVE sign in
front of your function, that means that you turn the function upside down, or 90°
O Example: f(x) = -|x|Compared to the quick sketch of the function f(x) = |x|, the sketch of our function is turned upside down.
One person from each group needs to grab…1. A white board2. A marker3. An eraser
“Lightning” RoundO You will have 1 minute to sketch the
given graphO Point goes to the every group who
gets it rightO Group with the most points at the
end of the period gets a prize (candy)
f(x) = x2
f(x) = (x – 1)3
f(x) = -|x| - 2
f(x) = x + 5
f(x) = √x
f(x) = -x2 + 3
f(x) = √(x – 1) + 3
f(x) = (x + 3)2 – 2