| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.46 |
| Score | 0% | 69% |
A coordinate grid is composed of which of the following?
x-axis |
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y-axis |
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all of these |
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origin |
The coordinate grid is composed of a horizontal x-axis and a vertical y-axis. The center of the grid, where the x-axis and y-axis meet, is called the origin.
A trapezoid is a quadrilateral with one set of __________ sides.
parallel |
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equal angle |
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right angle |
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equal length |
A trapezoid is a quadrilateral with one set of parallel sides.
Simplify (y + 6)(y - 6)
| y2 - 12y + 36 | |
| y2 + 12y + 36 | |
| y2 - 36 | |
| 59 |
To multiply binomials, use the FOIL method. FOIL stands for First, Outside, Inside, Last and refers to the position of each term in the parentheses:
(y + 6)(y - 6)
(y x y) + (y x -6) + (6 x y) + (6 x -6)
y2 - 6y + 6y - 36
y2 - 36
The endpoints of this line segment are at (-2, -4) and (2, 4). What is the slope of this line?
| 2 | |
| 2\(\frac{1}{2}\) | |
| -2\(\frac{1}{2}\) | |
| -\(\frac{1}{2}\) |
The slope of this line is the change in y divided by the change in x. The endpoints of this line segment are at (-2, -4) and (2, 4) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(4.0) - (-4.0)}{(2) - (-2)} \) = \( \frac{8}{4} \)What is 3a2 - 4a2?
| -a4 | |
| -1a2 | |
| 12a4 | |
| -1 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
3a2 - 4a2 = -1a2