diberikan fungsi y = 4x,hitung nilai y jika: a. x = 2; b. x = 3; c. x =a; d. x =a-1.

y = 4x

Jika :
x = 2
》y = 4(2)
》y = 8

x = 3
》y = 4(3)
》y = 12

x = a
》y = 4(a)
》y = 4a

x = a - 1
》y = 4(a - 1)
》y = 4a - 4

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a . y = 8
b . y = 12
c . y = 4a
d. y = 4a - 4