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direct and indirect variation
1. PPT on direct and indirect variation
VENUE: VII-H CLASS ROOM
DATE:30/11/2017
LALAJI MEMORIAL OMEGA
INTERNATIONAL SCHOOL
by
S.YUVAN
PRAMESH
2. Direct variation
2
➢When you are
driving a car you
may have noticed
that as you
increase the
acclaration the
speed increases
➢In the above
point you noticed
that one value
increases and the
3. DIRECT VARIATION
3
When we talk about
➢when we talk about direct
variation, we are talking
about a variation were x
increases as well as y also
increases or decreases in a
Constant rate
8. 8
➢ inverse variation is similar to direct
variation ,but in this
Type of variation one value increases and
another decreases
➢Inverse variation uses the formula:
X1Y1=X2Y2
INVERESE VARIATION
9. INVERSE VARIATION
9
EXAMPLE: If y varies indirectly to x
and x = 18 when y = 6,find y when x = 8
solution:
18(16)=8y
108=8y (18(16)=108)
y=108/8
= 13.5