Maths-
SAT
Easy
Question
Which of the following is the graph of the equation y = 2x − 5 in the xy-plane?
The correct answer is:
Given y = 0 then solve the abscissa
y = 25x – 5
0 = 25x – 5
2x = 5
x = 5/2
We now have the point (5/2, 0)
Set new x = 0 they solve for the ordinate
y = 2x - 5
y = (0) -5
y = -5
we new simply draw and line passing thru the two points (5/2,0) and (0,5)
kindly see the graph of y = 2x-5 with the points (5/2,0) and (0,-5)
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Source |
Percent of those surveyed |
| Doctor |
63% |
| Internet |
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| Magazines / brochures |
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| Television |
2% |
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Source |
Percent of those surveyed |
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|
x |
f(x) |
|
0 |
-2 |
|
2 |
4 |
|
6 |
16 |
|
x |
f(x) |
|
0 |
-2 |
|
2 |
4 |
|
6 |
16 |
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Number of States with 10 or More Electoral Votes in 2008
|
Electoral votes |
Frequency |
|
10 |
4 |
|
11 |
4 |
|
12 |
1 |
|
13 |
1 |
|
15 |
3 |
|
17 |
1 |
|
20 |
1 |
|
21 |
2 |
|
27 |
1 |
|
31 |
1 |
|
34 |
1 |
|
55 |
1 |
Number of States with 10 or More Electoral Votes in 2008
|
Electoral votes |
Frequency |
|
10 |
4 |
|
11 |
4 |
|
12 |
1 |
|
13 |
1 |
|
15 |
3 |
|
17 |
1 |
|
20 |
1 |
|
21 |
2 |
|
27 |
1 |
|
31 |
1 |
|
34 |
1 |
|
55 |
1 |
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The number of steps in a stairway is the number of its risers. For example, there are 5 steps in the stairway in the figure above. The total rise of a stairway is the sum of the riser heights as shown in the figure.
Some building codes require that, for indoor stairways, the tread depth must be at least 9 inches and the riser height must be at least 5 inches. According to the riser-tread formula, which of the following inequalities represents the set of all possible values for the riser height that meets this code requirement?
When designing a stairway, an architect can use the riser-tread formula 2h + d = 25, where h is the riser height, in inches, and d is the tread depth, in inches. For any given stairway, the riser heights are the same and the tread depths are the same for all steps in that stairway.
The number of steps in a stairway is the number of its risers. For example, there are 5 steps in the stairway in the figure above. The total rise of a stairway is the sum of the riser heights as shown in the figure.
Some building codes require that, for indoor stairways, the tread depth must be at least 9 inches and the riser height must be at least 5 inches. According to the riser-tread formula, which of the following inequalities represents the set of all possible values for the riser height that meets this code requirement?
maths-sat
