CBSE Class 11-science Maths Slope of a Line

• A line passes through the points (4,-6) and (-2,-5).Does it make an acute angle with the positive direction of x-axis? for class 11
• find an angle between the x-axis and the line joining the points (3,-1) and (4,-2)
• pair
  
• what is answer?
  
• for what value of a the point (a,1),(1,-3)and(1,4) are colinear
• find the slopes of the lines x+y=0and x-y=0
• find the slope of line making inclination 90°
• Acute angle between the medians drawnfrom the acute angles of the right angled isosceles triangle is  
  
• what is difference between the 0 slope and not defined slope graphically
• Find the value of k for which the point A(-2,3) B(1,2) C(k,0) are collinear. 

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