Write the equation of the line whose graph is shown.
A. y = x + 5
B. y = - x - 5
C. y = x - 5
D. y = - x + 5
Answer: D
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Provide an appropriate response.Starting with a tone having a frequency of 112 cycles per second, find the frequency of the tone that is four octaves higher.
A. 1792 cps B. 896 cps C. 12,544 cps D. 448 cps
Use technology to solve the system.2x - y = 5-4x +2y = -10
A. (0, -5)
B. No solution
C. (2, 5)
D. Infinitely many solutions: {
2x - y = 5}
Factor the polynomial completely using the trial and error method.15x2 + 11x - 12
A. (3x - 4)(5x + 3) B. prime C. (3x + 4)(5x - 3) D. (15x + 4)(x - 3)
If students look to authorities such as the teacher, the answers in the back of a text, or a calculator to determine mathematical correctness rather than their own reasoning, they can be said to have:
a. External sources of conviction b. Internal sources of conviction c. A collapse metaphor d. An approximation metaphor