Question

Cara penyelesaian persamaan linear A(-1,4) dan (1,0)

Answer 1

X1 = -1, x2 = 1, y1 = 4, y2 = 0

y-y1/y2-y1 = x-x1/x2-x1
y-4/0-4 = x+1/1+1
y-4/-4 = x+1/2
2y-8 = -4x-4
2y = -4x+4
y = -2x+2

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