THIS PRESENTATION IS USEFUL TO GRADE 10 AND GRADE 11 MATH STUDENTS LEARNING COORDINATE GEOMETRY. DIFFERENT FORMULAE FOR SLOPE ARE ILLUSTRATED WITH THE RELEVANT FORMULAE. THIS IS A QUICK AND EASY WAY TO LEARN SLOPE. THIS IS ALSO USEFUL FOR THE GRE QUANT, SAT AND ACT EXAMS.

1. GRADE 11 MATH
GRADE 10 MATH
SLOPE AND EQUATION
OF A LINE

2. PREVIEW:
THIS VIDEO ILLUSTRATES HOW TO CALCULATE THE SLOPE AND
PROBLEMS OF THE FORM y = mx +c .
PROBLEMS ARE EXPLAINED IN DETAIL WITH THE RELEVANT FORMULA
IN EACH CASE.
SO WATCH THIS ENTIRE VIDEO WITH ME!

3. Slope of a line I’d defined as tangent of the angle made by the line with the positive
direction of the x axis.
It is denoted by m

4. Slope of the x axis = 0
Slope of the y axis is
What is the slope of a line which makes an angle 60 degrees with the positive direction of they
y axis measured anticlockwise
60
∞

5. Question 2
What is the slope of the line passing through (2, 3) and(5,-7)
Question 3
Find x so that the line through (x,9) and (2,7) is parallel to the line through (2,-2) and
(6,4)

7. 2 parallel lines have the same slope
If 2 lines are perpendicular, product of the slopes = -1
Question 3
If A(2,-3),B (3,5) are 2 vertices of a rectangle ABCD,find the slope of
BC. , CD, DA

8. Slope of AB =
Slope of BC =
Slope of CD = 8
Slope of DA =

9. Equation of x axis y= 0
Equation of y axis x = 0
Any line parallel to the x axis is y = c
Any line parallel to the y axis is x = c
Slope intercept form of a line
y =m x +c
m slope
c is the y intercept
Find the equation of a straight line parallel to the x axis and having intercept -2 on the y axis
y =-2

10. Find the equation of a vertical line passing through (-7,3)
x = -7
Find the equation of a line having slope -2/7 , y intercept -3

11. Find the equation of the line whose inclination is y intercept =-5

12. Equation of the line is y = - x - 5
(y = my +c )
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