Write an equation which relates the figure number x to the number of tiles y
x= increase a row of 4 per image
y = 1 + 4*x
Figures
1
y = 1 + 4*(1) = 5
2
y = 1 + 4*(2) = 11
3
y = 1 + 4*(3) = 13
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Answer
The equation which relates the figure number x to the number of tiles y is
y = 1 + 4x
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