Equations
Solve: 3 + a = 10
a = 7
Slope
Rise/Run
Change in y/Change in x
y2-y1/x2-x1
Slope intercept form of a linear equation.
y=mx + b
Linear or Nonlinear
y = 3x - 52
Linear
Solve: 6 = y - 3
y = 9
Slope-Intercept Form
y = mx + b
The point where the line crosses the y-axis.
y-intercept
Function or Not a Function
(1, 7), (3, 8), (3, 6), (6, 5), (2, 11), (1, 4)
Not a function
Solve: 4 + 2c = 8
c = 2
Pythagorean Theorem
a2 + b2 = c2
What do you call the measure of a line's steepness
slope
Find the slope of the line passing through the following points: (-4, 0) and (-3, -2).
-2
True or false: This is a rational number
square root 2 34
false
Solve: 15 = 3d-3
d = 6
Volume of a Sphere
Sphere -> V = (4/3)pi*r3
How do you know if a line is linear or non-linear, describe both
Teacher approves
A flag is 30 inches wide by 48 inches long. Find the length of the diagonal of the flag.
About 57 inches
Numbers that include radicals (square roots) that are NOT perfect squares...and pi
irrational
Solve: -3(x+5) = 2x-5
x = -2
Distance Formula
Square root of (x2-x1)2 + (y2-y1)2
Explain how to graph y=2/5x+4
Start at the y-intercept at (0,4) and use the slope to find additional points on the line.
Bonus!!! 500 points to the first three teams that can correctly count the number of dinosaurs in the classroom! (not including drawings)
18
List the domain and range of the data set
{(4, -1), (6, 2), (-7, -6), (-5, 2), (-1, -8)}
Domain {4, 6, -7, -5, -1}
Range {-1, 2, -6, -8}