Lines/Linear
What is the equation for a line in slope intercept form?
y=mx+b
What shape does a quadratic function give you?
Parabola
What is the equation for an exponential function.
y = c * (ax)
Because 7 8 9
name the y intercept and slope of this line equation
y=-3x+4
slope = -3
y-intercept = (0,4)
What does the Vertex of a quadratic function tell us about its graph?
Vertex is either the Highest (maximum) point or Lowest (minimum) point of the graph.
It also shows us where our axis of symmetry lies.
Make an x & y table for the following function. for the given x's: x= -2, -1, 0, 1, 2
y=10*(2x)
x: -2 | -1 | 0 | 1 | 2
y: 5/2 | 5 | 10 | 20 | 40
how do we make 7 even ?
Subtract the S
Seven - S = even
What is the formula to find the slope of a line?
m= _________
m = (y2 - y1) / (x2 - x1)
What are the three different forms a quadratic equation can be written in?
Standard Form
Factored Form
Vertex/Graphing Form
Determine the exponential function that passes through the points (-2, 1) and (3, 32).
y= 4 * (2x)
What did 0 say to 8 ?
Nice Belt :)
Find the slope of this function from the given two points that lie on the line.
y= mx - 1
(2,3) & (-4,-9)
m= 2
y=2x-1
State which form the quadratic function is in:
y=3x2-12x+9
y=3(x-1)(x-3)
y=2(x-2)2-3
y=3x2-12x+9 {STANDARD}
y=3(x-1)(x-3) {FACTORED}
y=2(x-2)2-3 {VERTEX}
Determine the exponential function that passes through the points (4, 8) & (6, 32)
y= 1/2 * (2x)
What is a math teachers favorite dessert?
Pi
Write the equation of the line that passes through the points (1,1) & (4,10) .
y=3x -2
Sketch the parabola for the function :
y = 2x2 - 16x + 33
Hint: vertex is at (4,1)
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The small town has a population of 3,600 people in 2005. The population increases by 4% annually.
a. Write the function to represent this
b. What will the population be in 2025?
a. y=36000 * (1.04x)
b. ~7888 people
Why do plants hate math?
Because it gives them square roots