If *A*(2, 2), *B*(5, 5), and *C*(8, 8), then which is *AC *- *BC*?

4

Which value of *d* makes the graph of the equation 3*x* - *dy* = 5*d* perpendicular to the graph of *y* = 3*x* - 4?

*d* = -9

*d* = 9

*d* = 6

*d* = 3

Which values of *m* and *n* make the midpoint of *AB* locate at the origin, given *A*(*m*, 11) and *B*(-5, *n*)?

*m* = 5 and

*n* = -11

*m* = 11 and

* n* = -5

*m* = 10 and

*n* = -22

*m* = -10 and

*n* = 22

Which line is passing through (3, 5) and is parallel to *x*-axis?

*y* = -3x

*y* = 3

*y* = 5

*y* = 3

*x* + 5

Which point is on the graphs of the lines *y* = 3*x* + 2, 2*x* + 3*y* = 39, and 2*x* = 3*y* - 27?

(-1, 11)

(1, -11)

(3, 11)

(2, 11)