Answer:
coordinates of B are (-5, 3/2)
Step-by-step explanation:
equation :
x = m1 × x2 + m2 × x1 y = m1 × y2 + m2 × y1
_____________ _____________
m1 + m2 m1 + m2
x = (1 × -3) + (1 × -7) y= (1 × 2) + (1 × 1)
_____________ ____________
1 + 1 1 + 1
x = (-3 + -7)/ 2 = -10/ 2 = -5 y = (2+ 1)/2 = 3/2
∴coordinates of B are (-5, 3/2)
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