Rate of Change and Slope
Slope-Intercept Form
Standard Form
Evaluating Functions
Function or not?
100
DESCRIBE the slopes of lines a, b and c.
Lines a and b have positive slopes and line c has a negative slope
100
10) Give the slope AND the y-intercept for this equation. (Graph it on your review worksheet.)
Slope = -3/4
y-intercept = (0, -1)
100
8) Calculate the x and y-intercepts for the equation. Write your answers as ORDERED PAIRS!
x-intercept = (-3, 0)
y-intercept = (0, 2)
100
If f(x) = 2x-3. Find find x when f(x) = 9
9 = 2x-3
9+3 = 2x
12/2 = x
x = 6
100
Is this a function? EXPLAIN. 
Not a function because the input value 5 is mapped to two outputs, 7 and 10.
200
2) Find the slope of the line.
200
11) Give the slope AND the y-intercept for this equation. (Graph it on your review worksheet.)
Slope = 2/1 (or 2)
y-intercept = (0, 1/2)
200
9) Calculate the x and y-intercepts for the equation. Write your answers as ORDERED PAIRS!
x-intercept = (2, 0)
y-intercept = (0, 1.5)
200
If h(t) = 2x2. Find h(-2)
h(-2) = 2(-2)2 = 2(4) = 8
200
Is this graph a function or not? EXPLAIN
Not a function because it does not pass the vertical line test
300
4) Find the slope from the table.
2/3
300
What is the slope of the line 6x-3y=12 ?
2
y=2x-4
300
8) Graph each equation using x- and y-intercepts. SHOW YOUR WORK for finding the intercepts.
300
The function C(x) = 75x-25 represents the cost in dollars for x tickets bought for a basketball game. What is the cost for 10 tickets?
x = 10
C(10) = 75(10) - 25 = 750-25 = $725
300
Is this a function or not?
YES it is a function. It passes the Vertical Line Test.
400
6) Find the slope from the points.
-1/2
400
12) Write the equation of the line in SLOPE-INTERCEPT FORM (y = mx + b).
y=2/3x+1
400
Which line has the smaller x-intercept?
-4x+2y=8 or 2x+3y=18
-4x+2y = 8 with an x-intercept of -2.
400
M(x) = 3(2x+1)2 Find M(-3)
M(-3) = 3(2(-3)+1)2
= 3(-6+1)2
=3(-5)2
=3(25)
= 75
400
(-7, 10) (1, 3) (2, 4) (-1, 4) (-4, 1) (a, 3)
List all possible numbers that CANNOT be substituted for a in order for this relation to be a function.
a cannot be -7, 1, 2, -1 and -4 in order for this relation to be a function.
500
7) Find the slope from the points.
-7/9
500
13) Write the equation of the line in SLOPE-INTERCEPT FORM (y = mx + b).
y=-1/2x+2
500
9) Graph each equation using x- and y-intercepts. SHOW YOUR WORK for finding the intercepts.
500
Using the graph of y = f(x) below, find f(4)
when x = 4, f(4) = 1
500
What is the domain and range of this function?
Domain = (-3,1]
Range = [-4,0]