A pair of numbers a and b listed in a specific order with a at the first place and b at the second place is called an ordered pair (a, b). The x- coordinate of a point is its perpendicular distance from the y-axis measured along the x-axis. The x-coordinate is also called the abscissa. The y- coordinate of a point is its perpendicular distance from the x-axis measured along the y-axis. The y-coordinate is also called the ordinate.
Answer the following questions:
(a) What is the perpendicular distance of the point A(3, 4) from the y-axis?
(b) Write the coordinate of a point whose abscissa is 4 and ordinate is double of abscissa.
(c) What is the perpendicular distance of the point A(-2, 5) from the x-axis?
(d) Is ordered pair (2, 3) is same as (3, 2)?
(e) Write the ordinate and abscissa in the point (-4, -7)
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Answer:
a) 3points
b) 8
c)5points
d)No they are different.
e). Abscissa=-4, ordinates=-7
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