if y is direct proportional to x an y =5 when x=2, find the value of y when x=7
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y=35/2
Step-by-step explanation:
y is proportional to x
therefore (y1/y2) = (x1/x2)
given,
y1 = 5
x1 = 2
x2 = 7
=> (5/y2) = (2/7)
=> y2 = (5/2) × 7
=> y2 = 35/2
so for x = 7 , y = 35/2
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