Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
28 Cards in this Set
- Front
- Back
|
PARALLEL LINES
|
are coplanar lines that DO NOT intersect
|
|
|
INTERSECTING LINES
|
are lines that meet at a distinct point
|
|
|
PERPENDICULAR LINES
|
are lines that intersect and form right triangles
|
|
|
TRANSVERAL LINE
|
is a line that intersects two coplanar lines in two points
|
|
|
SKEW LINES
|
are lines that do not lie in the same plane and are not parallel.
|
|
|
m= slope
|
Rise over Run
y/x |
|
|
m= (formula)
|
y2 -y1
---------- x2 -x1 |
|
|
If x has SOME number (one number) creating a
VERTICAL LINE |
the slope is UNDEFINDED
5/0 is also UNDEFINDED can't divide by 0 |
|
|
HORIZONTAL LINES
ALL y values are the same what is the slope? |
the slope is ZERO
|
|
|
Rise & Run
|
________________________
|
|
|
POINT SLOPE FORM
|
y- y1 = m(x-x1)
|
|
|
Writing Equations of a line
|
NEED
*slope of the line *a point that lies on the line (x1,y1) |
|
|
WRITE AN EQUATION
slope = 2 passing through pts. (-3,4) |
y-y1 = m(x-x1)
y-4 = 2(x - -3) y-4= 2x + 6 y= 2x +10 |
|
|
WRITE an EQUATION
given two points |
*first need to find the slope
|
|
|
Write and Equation of line with UNDEFINDED slope
|
Can't enter info into point-slope formula.
X= |
|
|
LINEAR EQUATION
|
an Equation in one or two variables whose graph is a STRAIGHT LINE.
|
|
|
MOST POPULAR form of a linear equation
|
SLOPE INTERCEPT FORM
|
|
|
POINT INTERCEPT FORM
|
y= mx+b
|
|
|
Ax + By = C
is in STANDARD FORM FROM STANDARD FORM to SLOPE INTERCEPT FORM |
solve for y!
|
|
|
Slope= 2/5
b= 3 b is 3 when x is 0 (0,3) |
y = 2/5x + 3
|
|
|
HORIZONTAL LINE
|
SLOPE OF ZERO
|
|
|
VERTICAL LINE
|
SLOPE IS UNDEFINED
|
|
|
LINEAR EQUATIONS
4x + 8y = 16 |
8y=16- 4x
y= 16/8 - 4/8x y= 2 - 1/2x y= -1/2x +2 |
|
|
y= 3x + 2
|
m= 3 Slope of 3
(0,2) 2 is the y-intercept |
|
|
y= -3x +4
what is the slope? |
RISE over RUN
-3 = -3/1 |
|
|
LINEAR RELATIONSHIPS
Real world Problems x and y |
rise/ run
y/ x Independant/ Dependent rate of change in something |
|
|
DEPENDENT
|
X
(dependent on y) |
|
|
INDEPENDENT
|
Y
(independent from x) |
