Determine whether or not the function is one-to-one.
A. Yes
B. No
Answer: B
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Parametric equations and and a parameter interval for the motion of a particle in the xy-plane are given. Identify the particle's path by finding a Cartesian equation for it. Graph the Cartesian equation. Indicate the portion of the graph traced by the particle and the direction of motion.x = 25t2, y = 5t, -? ? t ? ?
A. x = y2; Entire parabola, top to bottom (from
1st quadrant to origin to 4th quadrant)
B. y = x2; Entire parabola, right to left (from
1st quadrant to origin to 2nd quadrant)
C. x = y2; Entire parabola, bottom to top (from
4th quadrant to origin to 1st quadrant)
D. y = x2; Entire parabola, left to right (from
2nd quadrant to origin to 1st quadrant)
Simplify the expression. Write the result using positive exponents only.2-1 + 6-1
A. 
B. 2
C. - 
D. 
Add or subtract as indicated.(5x2 - xy - y2) + (x2 + 11xy + 8y2)
A. 5x2 + 11xy + 8y2 B. 6x2 + 12xy + 9y2 C. 4x2 - 12xy - 9y2 D. 6x2 + 10xy + 7y2
Solve the equation.
= 
A. 
B. 
C. 
D. 