Determine whether the matrix is in row-echelon form. If it is, determine if it is also in reduced row-echelon form.
A) row-echelon form and reduced row-echelon form
B) row-echelon form
C) neither
B) row-echelon form
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Determine the quadrant(s) in which (x, y) is located so that the condition(s) is (are) satisfied. ? xy< -4 ?
A. Quadrant II or III B. Quadrant I or III C. Quadrant III or IV D. Quadrant II or IV E. Quadrant I or IV
Determine the slope and the y-intercept for the linear equation. Use the slope and the y-intercept to sketch the graph of the equation.y = - 
x + 1
A. m = - 
, y-intercept: (0, 2)
B. m = 
, y-intercept: (0, 2)
C. m = 
, y-intercept: (0, 1)
D. m = - 
, y-intercept: (0, 1)
Refer to the equilateral triangle shown below and its six symmetries: ? r1 : reflection with axis l1 ? r2 : reflection with axis l2 ? r3 : reflection with axis l3 ? R1 : 120° clockwise rotation with rotocenter O ? R2 : 240° clockwise rotation with rotocenter O ? I : the identity symmetry
Which symmetry results when applying the symmetry r1 followed by R2 ?
A. R1 B. r1 C. R2 D. r2 E. r3
The graph of a quadratic function is given. Choose the function's equation.
A. f(x) = x2 + 3 B. f(x) = x2 - 3 C. f(x) = x2 + 6x + 9 D. f(x) = x2 - 6x + 9