Relationship between two variables

All in One Place

Everything you need for JC, LC, and college level maths and science classes.

Learn with Ease

We’ve mastered the national curriculum so that you can revise with confidence.

Instant Help

24/7 access to the best tips, walkthroughs, and practice exercises available.

0/7
?
Examples
Lessons
  1. Understanding the difference between X & Y

    1. Differences between x values and y values
  2. Express the relation using mapping notation and ordered pairs.
    1. x = { -5 , -3 , -1 , 1 , 3 }
      y = { 2 , 4 , 6 , 10 , 12 }
    2. x = { -4 , -2 , 0 , 2 , 4 }
      y = { 3 , 3 , 3 , 3 , 3 }
    3. (1,3) , (2,2) , (3,1)
  3. Indicate the quadrant of the following points.
    1. (5, -3) (-3, 4) (-4, -3) (2, -6)
  4. Plot or find the points on the grid
    1. Find the coordinates A, B, C & D points
      Find the coordinates on the coordinate plane
    2. Plot the following points on the grid:
      (4,5), (-2, 4), (-4,-3) & (5,-6)

      Plot points on coordinate plane
Topic Notes
?
This lesson will teach us the basic concepts of relationship between two quantities in the coordinate system. For instances, is y a dependent variable or independent variable? What is domain and range? What is an ordered pair? What is quadrant? And how do we plot points on a graph?
Coordinate
System
: A presentation of a real number by points on the real number line using an order pair.

Order
pairs:
A point ( x , y ) on the coordinate plane. Eg. (-3,5), (0,5)…

Origin: The intersection of x-axis and y-axis (0,0) \to ( 0 , 0 )

Relations: Sets of ordered pairs ( x , y )

Domain: All the x-values on the coordinate system

Range: All the y-values on the coordinate system

Independent Variable: The "x" values, which are also known as the inputs when solving for a solution.

Dependent Variable: The "y" values, which are also known as the outputs when solving for a solution.

quadrants on coordinate plane