A straight line in the xy- plane has y-intercept of 20 . On this line the x-coordinate of the point is 150 and y-coordinate is 600 then what is the slope of the line?	Choose the correct answer.
A) 3.9  B) 4.6  C) 5.2  D) 6  E) 8.1
Eq of line = Y = MX +C   C= 20   X=150   Y=150M + 20,   Substitute Y by 600 as given in question.   600=150M+20 , M =3.9   correct option is 3.9
<result>A</result>
A straight line in the xy- plane has y-intercept of 20 . On this line the x-coordinate of the point is 150 and y-coordinate is 600 then what is the slope of the line?