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1. |
In mathematics, a relation is _______. |
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A. |
a set of ordered pairs with the same x-ccordinates |
B. |
a set of ordered pairs in which every x-coordinate equals every y-coordinate |
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C. |
a set of ordered pairs with the same y-coordinates |
D. |
a set of ordered pairs |
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Hint |
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2. |
Which ordered pair is a solution of y = 3x + 2? |
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A. |
(0, 2) |
B. |
(1, 1) |
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C. |
(4, 10) |
D. |
(2, 0) |
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Hint |
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3. |
Which graph represents the equation y = -x + 4? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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4. |
A relation in which each member of the domain is paired with exactly one member of the range is called a(n)_______. |
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A. |
equivalent equation |
B. |
function |
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C. |
ordered relation |
D. |
equivalent relation |
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Hint |
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5. |
If f(x) = -5x + 8, find f(-1). |
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A. |
2 |
B. |
3 |
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C. |
40 |
D. |
13 |
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Hint |
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6. |
Choose the tables that expresses
{(-3, 4), (-1, -5), (0, 2), (2, 3), (3, -4)}. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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7. |
Which of the ordered pairs is a solution of y = -4x – 4? |
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A. |
(3, -8) |
B. |
(-2, 4) |
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C. |
(1, -6) |
D. |
(0, 4) |
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Hint |
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8. |
Which is true of the equation y = cx where c is a constant? |
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A. |
The graph passes through the origin. |
B. |
The graph will be increasing. |
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C. |
The graph will be decreasing. |
D. |
The graph will always cross the x-axis at exactly one point. |
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Hint |
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9. |
Which is the graph of y = -3x |
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A. |
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B. |
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C. |
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D. |
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Hint |
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10. |
Suppose y varies directly as x and y = -10 when x = 5. Find x when
y = 40. |
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A. |
-20 |
B. |
20 |
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C. |
-10 |
D. |
10 |
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Hint |
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11. |
Alice and Gertrude take 8 hours to mow a lawn. If everyone mows the lawn at the same speed as Gertrude and Alice, how long would it take 4 people to mow a lawn? |
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A. |
3 hours |
B. |
2 hours |
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C. |
6 hours |
D. |
4 hours |
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Hint |
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12. |
The formula for the area of a rectangle is A = lw. The two rectangles have the same area. Find the length of the second rectangle. |
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A. |
24 m |
B. |
6 m |
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C. |
4 m |
D. |
12 m |
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Hint |
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