Functions
Slope and Slope-Intercept Form
Function Notation and Word Problems
Intercepts
Graphing
100
Is {(2, 4), (5, 4), (7, 8), (2, 3), (1, 7), (-2, 8))} a function? Be prepared to defend your answer.
No! The x-value of 2 repeats!
100
In the equation y = 9 - 7x, what is the slope?
-7
100
f(x) = -3x + 7 What is f(6)?
-11
100
In the equation y = 9 - 4x what is the y-intercept? Write as a coordinate point.
(0, 9)
100
What is the equation of the line (in slope-intercept form) of Graph 3?
y = 2/3x + 1
200
Is Graph 1 a function? Be prepared to defend your answer.
No. Doesn't pass the vertical line test.
200
What is the slope between (3, 4) and (6, 7)?
1
200
f(x) = -3x + 7 What is x if f(x) = 4?
x = 1
200
What is the x-intercept in Graph 2? Write as a coordinate point.
(-4, 0)
200
What is the equation of the line (in slope-intercept form) of Graph 4?
y = 1/3x - 4
300
Convert 3x + y = 5 to standard form.
y = -3x + 5
300
The slope of my line is 5. My line goes through the point (1, 1). What is the equation of my line in slope-intercept form?
y = 5x - 4
300
The yoga studio charges a $30 sign-up fee and $10 per class. Write an equation to represent y, the total bill, if you attend x classes.
y = 20 + 10x
300
In the equation 4x - 8y = 16 what is the y-intercept? Write as a coordinate point.
(0, -2)
300
What is the equation of the line (in slope-intercept form) of Graph 5?
y = 3x - 1
400
Convert -3x + 2y = 6 to standard form.
y = 3/2x + 3
400
What is the slope between (-6, 1) and (9, -5)? As always, simplify your answer.
-2/5
400
y = 20 + 10x (y = total bill and x = # of classes) What is the total bill for 5 classes?
$70
400
In the equation 3x + 2y = 18 what is the x-intercept? Write as a coordinate point.
(6, 0)
400
What is the equation of the line (in slope-intercept form) of Graph 6?
y = -2/5x + 14/5
500
Three part question! 1. Write down slope intercept form 2. What does m stand for? 3. What letter is used to represent the y-intercept?
1. y = mx + b 2. m = slope 3. b = y-intercept
500
My line goes through the points (3, 2) and (-1, -6). What is the equation of my line in slope-intercept form?
y = 2x - 4
500
y = 20 + 10x (y = total bill and x = # of classes) If the bill is $130, how many classes did you attend?
11 classes
500
In the equation y = 7x - 8 what is the x-intercept? Write as a coordinate point.
(8/7, 0)
500
What is the equation of the line (in slope-intercept form) of Graph 7?
y = -1/2x + 4
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