find the total amount of money corresponding to each of the given principles with rate of interest2% and time period one year and complete the table also draw a line graph to show the relation between the two variable principle 500-800 300 700 900
amount
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Answer:
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Step-by-step explanation:
Linear Graphs
A line graph consists of bits of line segments joined consecutively. Sometimes the graph may be a whole unbroken line. Such a graph is called a linear graph. To draw such a line we need to locate some points on the graph sheet. We will now learn how to locate points conveniently on a graph sheet.
Location of a point
The teacher put a dot on the black-board. She asked the students how they would describe its location. There were several responses
Can any one of these statements help fix the position of the dot? No! Why not? Think about it.
John then gave a suggestion. He measured the distance of the dot from the left edge of the board and said, “The dot is 90 cm from the left edge of the board”. Do you think John’s suggestion is really helpful? (Fig 15.10)
A, A1, A2, A3 are all 90 cm away A is 90 cm from left edge and
from the left edge. 160 cm from the bottom edge
Rekha then came up with a modified statement : “The dot is 90 cm from the left edge and 160 cm from the bottom edge”. That solved the problem completely! (Fig 15.11) The teacher said, “We describe the position of this dot by writing it as (90, 160)”. Will the point (160, 90) be different from (90, 160)? Think about it.
The 17th century mathematician Rene Descartes, it is said, noticed the movement of an insect near a corner of the ceiling and began to think of determining the position of a given point in a plane. His system of fixing a point with the help of two measurements, vertical and horizontal, came to be known as Cartesian system, in his honour
Coordinates
Suppose you go to an auditorium and search for your reserved seat. You need to know two numbers, the row number and the seat number. This is the basic method for fixing a point in a plane.
Observe in Fig 15.12 how the point (3, 4) which is 3 units from left edge and 4 units from bottom edge is plotted on a graph sheet. The graph sheet itself is a square grid. We draw the x and y axes conveniently and
then fix the required point. 3 is called the x-coordinate of the point; 4 is the y-coordinate of the point. We say that the coordinates of the point are (3, 4).