Evaluate the expression.4x2 + 7y for x = 6 and y = 9
A. 207
B. 639
C. 366
D. 1548
Answer: A
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Use the discriminant to determine the number and type of the solutions to the quadratic equation. Do not solve the equation.7x2 + 7x - 4 = 0
A. exactly one real solution B. two real solutions C. two nonreal solutions
Graph the equation by plotting the intercepts.y = - 
x + 2
A. 
B. 
C. 
D. 
Determine the domain and range of the relation.{(-4, 4), (1, -1), (-2, -4), (2, -2)}
A. Domain: {4, -1, -4, -2}; range: {-4, 1, -2, 2} B. Domain: {-4, 0, -2, 2}; range: {4, -1, 0, -2} C. Domain: {-4, 1, 7, 2}; range: {4, -1, -4, 7} D. Domain: {-4, 1, -2, 2}; range: {4, -1, -4, -2}
Determine whether the ordered pair is a solution of the system of equations. Use alphabetical order of the variables.(1, 6); b + 4a = -2 4b + 2a = -22
A. No B. Yes