Functions
Graph
Solve for 'y'
Function Notation
Direct Variation
100
Is this a function? {(3, 2), (5, 4), (3, 3)}; why?
Yes, because the 'x' value of 3 repeats.
100
Using domain {-1, 0, 1}, graph y = 2x
What is {(-1, -2), (0, 0), (1, 2)}
100
3x + y = 8
What is y = -3x + 8?
100
If g(x) = -3x - 6, find g(2)
What is -12?
100
Assume that 'y' varies directly as 'x'; find y when x = 12, if y = 18 when x = 27
What is y = 8
200
Identify the function: a. {(5, -2), (4, -2), (3, 1), (-5, 2)} b. {(-8, 2), (-10, 3), (-8, -2), (4, 3)}
What is a?
200
Using at least 3 points, graph y = x - 4
What is a line passing through (0, -4), (-1, -5), (1, -3)?
200
Solve for 'y': 4x - 2y = 8
What is y = 2x - 4
200
If h(x) = 2x - 6; find h(8)
What is 10?
200
Identify the direct variation equation: y = 2x, y - 2 = x, yz = 3, y = x + 21
What is y = 2x
300
Determine if the relation is a function? Domain: {3, 2, 5, 6} Range: {2, 2, 5, 8}
Yes
300
Graph y = 2x - 5
What is a line passing through (0, -5), (1, -3), (-1, -7)?
300
Solve for 'y': -3x + y = 10
What is y = 3x + 10?
300
If g(x) = 2x + 2, find g(-3)
What is -4?
300
Write your own direct variation equation
What is y = ___ x
400
Identify the domain and range: {(3,2), (5,8), (0,3)}
What is Domain {3, 5, 0} Range {2, 8, 3}
400
Find the domain of y = x - 2 if the RANGE is {-3, -1, 4, 6}
What is {-1, 1, 6, 8}?
400
Solve for 'y': -3x - 2y = 6
What is y = -3/2 x - 3?
400
If t(x) = 4x - 3, find t(1/2)
What is -1?
400
Find y when x = 7 if y = 15 when x = 5
What is y = 21?
500
Create a function with at least 4 sets of ordered pairs.
What is any set of ordered pairs with no repeating 'x'
500
Find the domain of y = 2x + 2 if the range is {-2, 0, 2, 4}
What is {-2, -1, 0, 1}
500
Determine if the equation is a linear equation. If so, identify A, B and C: 7x + 3y = 12
What is yes; A = 7, B = 3, C = 12 in the standard form
500
If g(x) = 2x + 2, find g(2h)
What is 4h + 2?
500
If there are 16 ounces in 1 pound, how many ounces are in 2.8 pounds?
What is 44.8 oz?
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