Tolong yaa no 10 sampai 18 benar atau slah
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12) f(x) = 2x² + 5x - 10f(2) = 2(2)² + 5(2) - 10
= 8 + 10 - 10
= 8 ( B )
15) y = - 4x + 2
y = - 4(2) + 2
y = - 8 + 2
y = - 6 ( D )
17) 4y = 5x
m = x/y
m = 5/4 ( C )
18) y - 3x = 7
diubah ke bentuk y = mx + c
maka
y = 3x + 7
m = 3 ( B )