| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.53 |
| Score | 0% | 71% |
Which of the following is not required to define the slope-intercept equation for a line?
\({\Delta y \over \Delta x}\) |
|
x-intercept |
|
slope |
|
y-intercept |
A line on the coordinate grid can be defined by a slope-intercept equation: y = mx + b. For a given value of x, the value of y can be determined given the slope (m) and y-intercept (b) of the line. The slope of a line is change in y over change in x, \({\Delta y \over \Delta x}\), and the y-intercept is the y-coordinate where the line crosses the vertical y-axis.
The dimensions of this cube are height (h) = 1, length (l) = 9, and width (w) = 3. What is the volume?
| 45 | |
| 96 | |
| 27 | |
| 126 |
The volume of a cube is height x length x width:
v = h x l x w
v = 1 x 9 x 3
v = 27
If a = c = 5, b = d = 9, what is the area of this rectangle?
| 64 | |
| 15 | |
| 45 | |
| 21 |
The area of a rectangle is equal to its length x width:
a = l x w
a = a x b
a = 5 x 9
a = 45
On this circle, line segment AB is the:
radius |
|
chord |
|
diameter |
|
circumference |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
If side x = 11cm, side y = 14cm, and side z = 13cm what is the perimeter of this triangle?
| 38cm | |
| 34cm | |
| 30cm | |
| 24cm |
The perimeter of a triangle is the sum of the lengths of its sides:
p = x + y + z
p = 11cm + 14cm + 13cm = 38cm