To determine the relationship between R and E, we can analyze the given data points.
When R = 290 and E = 200:
R/E = 290/200 = 1.45
When R = 410 and E = 800:
R/E = 410/800 = 0.5125
From these calculations, we observe that R/E is changing, indicating that R is not directly proportional to E. Therefore, we can conclude that R partly varies with E.
To determine the constant portion, we can calculate the ratio of R to E when E is the same in both scenarios.
When E is constant at 200:
R = 290
When E is constant at 800:
R = 410
As the value of R changes when E is constant, we can conclude that there is no constant portion in the relationship between R and E. Thus, R is partly constant and partly varies with E.
R partly constant and partly varies with E when R=290 E=200 and when R=410 E=800
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