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f(a) = 27
2a - 3 = 27
2a = 27 + 3
2a = 30
a = 15
Nomor 2.
Buat dahulu persamaan garisnya.
Artinya untuk b = 16:
2.cari dulu persamaannya...
nyari gradien -->
input x1 = -2; y1 = 4; x2 = 3; y2 = -6;
input lagi kerumus persamaan garis
x1 = -2; y1 = 4; m = -2;
(a,b) --> (x,y)
input aja y = b = 16 kepersamaan tadi...
:))