GRAPHS – MODE OF OPERATION

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Presentation transcript:

GRAPHS – MODE OF OPERATION HOW TO PROCEED TO DO A GRAPH? ASK THE FOLLOWING QUESTIONS. HAVE I MARKED X axis and Y axis? HAVE I LABELED THEM WITH CORRECT UNITS?

WHAT IS RANGE? CURRENT IN AMPERES 0.2 0.45 0.87 0.95 1.25 VOLTAGE IN VOLTS 0.24 0.54 1.05 1.12 1.50 LOOK AT THE CURRENT VALUES: THE RANGE FOR CURRENT IS MAXIMUM 1.25 LOOK AT THE VOLTAGE: THE RANGE FOR VOLTAGE IS 1.50 IN OTHER WORDS, THE MAXIMUM VALUE WHICH HAS TO BE ACCOMODATED IN THE GRAPH

SCALE IF YOU SEE THE X AXIS , THE VALUE OF 1.25 HAS TO BE DIVIDED IN THE GRAPH. SO YOU CAN TAKE THE SCALE AS 2 CM = 0.2 AMPERES IF YOU SEE THE Y AXIS , THE VALUE OF 1.50 HAS TO BE DIVIDED IN THE GRAPH. SO YOU CAN TAKE THE SCALE AS 2 CM = 0.2 VOLTS

1.6 1.4 V O L T A G E I N S 1.2 1.0 0.8 0.6 0.4 0.2 0.2 0.4 0.6 0.8 1.0 1.2 1.4 CURRENT IN AMPERES

HOW TO FIND SLOPE? 1.6 SLOPE = DIFFERENCE IN Y AXIS = 1.0 – 0.4 = 0.6/0.51 = 1.1 VOLTS DIFFERENCE IN X AXIS 0.85 – 0.34 AMPERES 1.4 V O L T A G E I N S 1.2 1.0 0.8 0.6 0.4 0.2 0.2 0.4 0.6 0.8 1.0 1.2 1.4 CURRENT IN AMPERES

WHAT IS BEST FIT? A line of best fit (or "trend" line) is a straight line that best represents the data on a scatter plot. This line may pass through some of the points, none of the points, or all of the points.

I AM SURE THAT IF I GO THROUGH THIS SLOWLY, I CAN UNDERSTAND HOW TO DRAW SLOPE AND BEST FIT !!!!!!