This graph shows how the number of cakes Fred can bake is related to the

number of additional eggs he buys. The variable x represents the number

of additional eggs Fred buys, and the variable y represents the total

number of cakes he can bake.

100

90

90

80

70

70

60

65

50

Number of cakes

Cakes baked

40

40

30

30

20

10 20

30

40

50

60

70 80

90

100

Number of additional eggs

Write an equation for the relationship shown in the graph. Use variables,

whole numbers, and proper or improper fractions

in simplest form. Do

not

use decimals.

10

10

ym