if the variables X and y & vary
directly then find the values of 'a' and 'b'
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Answered by
1
Step-by-step explanation:
ANSWER
y varies directly as x
⇒y∞x
⇒y=kx where k is some constants
when x=8, y is 12
12=k(8)
⇒k=
2
3
when x=6, y is a
⇒a=k(6)
a=
2
3
(6)
⇒a=9
when x=b, y is 21
⇒21=k(b)
21=
2
3
(b)
⇒b=14.
Answered by
2
Answer:
a=8
Step-by-step explanation:
we know that they r in direct variation:
24÷4 = 6 then
32÷4 = 8
so ur ans is 8
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