Question

Persamaan garis (-2,3) dan (-7,-4) adalah...
a. -7/-5x + 29/-5
b. -7/-5x - 29/-5

Answer 1

Persamaan garis mel 2 titik
y - y1 / y2 - y1 = x - x1 / x2 - x1
y - 3 / -4 -3 = x -(-2) / -7 -(-2)
y -3 / -7 = x + 2 / -5
Dikali silang
-5 (y-3) = - 7 (x +2)
-5y + 15 = -7x -14
-5y = -7x -14-15
-5y = -7x - 29
y = -7/ -5 x - 29/-5 B