Without graphing, decide:(a) Are the graphs of the equations are identical lines, parallel lines, or lines intersecting at a single point?(b) How many solutions does the system have?
A. lines intersecting at a single point; one solution
B. identical lines; infinite number of solutions
C. parallel lines; no solution
Answer: C
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Find the slope of the line and sketch its graph.2x + 5y = 19 
A. slope = 
B. slope = - 
C. slope = - 
D. slope = 
Find the intercepts of the function f(x).f(x) = (x + 2)(x - 4)(x + 4)
A. x-intercepts: -2, -4, 4; y-intercept: -32 B. x-intercepts: -2, -4, 4; y-intercept: 32 C. x-intercepts: -4, 4, 2; y-intercept: -32 D. x-intercepts: -4, 4, 2; y-intercept: 32
Decide whether the equation is conditional, an identity, or a contradiction. Give the solution set.16m + 20 = 4(2m - 11)
A. Conditional; {3} B. Contradiction; ? C. Conditional; {-8} D. Identity; {all real numbers}
Provide the proper response.Which of the following numerical integration methods generally gives the best approximation for the same number of subintervals?
A. summation of areas of rectangles B. Simpson's rule C. the trapezoidal rule D. No method is generally best.