Explanation:
4)
11 + 3x + 2 = 8x - 2
8x - 2 - 3x - 2 = 11
5x - 4 = 11
5x = 11 + 4 = 15
x = 15/5
x = 3
5) Co ordinate of Point M = (-7, -3)
co ordinate of mid point K = (-4, -6)
mid point formula = (x1+x2/2 ; y1+y2/2)
let the Co ordinate of Point L be (x,y)
using midpoint formula
-4 = -7 + x/2
-4 × 2 = -7 + x
-8 + 7 = x
-1 = x
-3 + y/2 = -6
-3 + y = -6 × 2
y = -12 + 3
y = -9
Co ordinate of Point L = (-1,-9)