Function Characteristics
Vocabulary word for y values
Range
Find f(3) in y = x + 5
8
The slope in y = 2x + 1
slope = 2
If the slope is 4 and the y-intercept is 2, name the equation in slope-intercept form
y = 4x + 2
It costs $5 per hour to rent a bike plus a flat rate of $25. Write an equation in slope-intercept form to show how much it costs to rent a bike
y =5x + 25
Line
Find f(4) in y = 2x + 1
9
The slope in y = -4x + 1
m = -4
If the y-intercept is 3 and the slope is -2, name the equation in slope-intercept form
y = -2x + 3
Nina earns a flat rate of $400 plus $25 for every pizza she delivers. Write an equation in slope-intercept form to show Nina's salary
y = 25x + 400
The domain in (-4,0), (5,4), (5, 4), (-9, 12)
{-9, -4, 5}
Find f(2) in f(x) = -3x
-6
The slope from (4, 5) and (10, 6)
1/6
The equation for slope-intercept form
y = mx + b
The direction of the graph of y = -2
left to right
The range values in (-4,0), (3,4), (5, 4), (-9, 12)
{0, 4, 12}
Find f(2) in f(x) = 10 - 3x
4
The slope from y = 4 - 5x
-5
When graphing a line from slope-intercept form, you need to graph this point first
y-intercept
In the graph y = 3, name the slope
Zero
Function or not a function?
(-4,0), (3,4), (5, 4), (-9, 12)
Function - domain values do NOT repeat
Find f(0) in f(x) = 8x - 2x + 1
1
The slope from (-2, 6) and (9, -4)
-10/11
If you have the ordered pairs (4, 5) and (7, 3) and a y-intercept of 1, name the equation in slope-intercept form
y = -2/3x + 1
It costs $6 per hour to rent a paddleboard plus a flat rate of $30. How much would it cost to rent the paddleboard for 4 hours?
$54 for 4 hours