| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.02 |
| Score | 0% | 60% |
The endpoints of this line segment are at (-2, 0) and (2, 4). What is the slope of this line?
| 1 | |
| -1\(\frac{1}{2}\) | |
| -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, 0) and (2, 4) so the slope becomes:
m = \( \frac{\Delta y}{\Delta x} \) = \( \frac{(4.0) - (0.0)}{(2) - (-2)} \) = \( \frac{4}{4} \)If side x = 13cm, side y = 7cm, and side z = 15cm what is the perimeter of this triangle?
| 35cm | |
| 29cm | |
| 33cm | |
| 37cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 13cm + 7cm + 15cm = 35cm
Which types of triangles will always have at least two sides of equal length?
equilateral, isosceles and right |
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equilateral and right |
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isosceles and right |
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equilateral and isosceles |
An isosceles triangle has two sides of equal length. An equilateral triangle has three sides of equal length. In a right triangle, two sides meet at a right angle.
Which of the following expressions contains exactly two terms?
quadratic |
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monomial |
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polynomial |
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binomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
Solve -7c - 2c = -5c + 7y + 2 for c in terms of y.
| 7y + 2 | |
| -2\(\frac{1}{5}\)y - 1\(\frac{2}{5}\) | |
| -\(\frac{1}{2}\)y - 1\(\frac{1}{2}\) | |
| -4\(\frac{1}{2}\)y - 1 |
To solve this equation, isolate the variable for which you are solving (c) on one side of the equation and put everything else on the other side.
-7c - 2y = -5c + 7y + 2
-7c = -5c + 7y + 2 + 2y
-7c + 5c = 7y + 2 + 2y
-2c = 9y + 2
c = \( \frac{9y + 2}{-2} \)
c = \( \frac{9y}{-2} \) + \( \frac{2}{-2} \)
c = -4\(\frac{1}{2}\)y - 1