1 2 3
4. y=x2-4
5.
3.52
3.
person.
c
B.
A. Write an equation for the following statements:
The fare Fof a passenger varies directly as the distance d of his destination.
The cost of fish varies directly as its weight win kilograms.
An employee’s salary s varies directly as the number of days d he has worked.
4. The area A of a square varies directly as the square of its side s.
s. The distance D travelled by a car varies directly as its speed s.
The length I of a person’s shadow at a given time varies directly as the height h of the
The cost of electricity C varies directly as the number of kilowatt-hour consumption I.
The volume V of a cylinder varies directly as its height h.
The weight W of an object is directly proportional to its mass m.
10. The area A of a triangle is proportional to its height h.
B. Determine if the tables and graphs below express a direct variation between the variables.
If they do, find the constant of variation and an equation that defines the relation.
1
2
3
4
-9
12
2
-21
-28
y
3
6
-15
-20
25
y
2
Answer:
B.
1) F = k / d
2) C = k / w
3) s = k / d
4) A = k / s(squared, pls write in exponent form)
5) D = k / s
6) l = k / h
7) C = k / l
8) V = k / h
9) W = k / m
10) A = k / h
passnownow
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