m and n are the x and y coordinates, respectively, of a point in the coordinate plane. if the points ( m, n ) and ( m + p, n + 12 ) both lie on the line defined by the equation x = ( y / 4 ) - ( 2 / 5 ), what is the value of p?  Answers.
A) 1 B) 2 C) 3 D) 4 E) 5
<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<result>C</result>
m and n are the x and y coordinates, respectively, of a point in the coordinate plane. if the points ( m, n ) and ( m + p, n + 12 ) both lie on the line defined by the equation x = ( y / 4 ) - ( 2 / 5 ), what is the value of p?
divide(12, 4)
"x = ( y / 4 ) - ( 2 / 5 ) , and so y = 4 x + 8 / 5 . the slope is 4 . ( n + 12 - n ) / ( m + p - m ) = 3 p = 3 the answer is c ."