Algebra Final

Question 1

relation

Answer 1

a set of ordered pairs
ex.: (-9,4)

Question 2

domain

Answer 2

set of all first components of the ordered pairs

Question 3

where is domain found

Answer 3

domain is found along the x axis or read from left to right on a graph

Question 4

range

Answer 4

set of all second components of the ordered pairs

Question 5

where is range found

Answer 5

range is found along the y axis or read from the bottom of the graph to the top

Question 6

function

Answer 6

a relation in which each element of the domain corresponds to exactly one element of the range

Question 7

examples of a function

Answer 7

x1 to y1
x2 to y2

x1 and x2 to y1

Question 8

not a function

Answer 8

x1 to y1 and y2
or known as a vertical line

Question 9

x-intercept

Answer 9

points where the graph touches the x-axis ex.: (9,0)

Question 10

y-intercept

Answer 10

points where the graph touches the y-axis ex.:(0,9)

Question 11

F(X) =

Answer 11

Y

Question 12

slope

Answer 12

steepness of a line
it is independent of the two points chosen on the line

Question 13

To find X-intercept

Answer 13

In the equation let y = 0

Question 14

To find Y-intercept

Answer 14

in the equation let x = 0

Question 15

Formula to find slope

Answer 15

M = Y2-Y1 / X2-X1

Question 16

Horizontal line has a slope of

Answer 16

0

Question 16

Vertical line has a slope of

Answer 16

NA it is undefined

Question 16

Undefined slope means

Answer 16

2/0 which means is can only rise so there would not be a real slope

Question 17

Point Slope Form

Answer 17

Y-Y1 = M (X-X1)

Question 18

Slope Intercept Form

Answer 18

Y = MX + B

Question 19

Slope of parallel line is

Answer 19

the same constant slope

Question 20

Slope of perpendicular lines are

Answer 20

negative reciprocals of each others slope

Question 21

<

Answer 21

less than

Question 22

>

Answer 22

greater than

Question 23

Piecewise Function

Answer 23

Function that you plug in an addition X in that follows the equation to find Y and another point.
This is a linear function or a double linear function

Question 24

A piecewise function can

Answer 24

Have two points on the same x-axis. One is open and one is closed

Question 25

A piecewise function can not

Answer 25

have two defined points on the same Y-axis whether they are open or closed or matching or opposite