Answer:
The gradient is 1
Step-by-step explanation:
m, gradient= (y2-y1) ÷ (x2-x1)
-5x + x + 9 = -4x + 12
-4x+9= -4x+12
move +9 to the other side
sign changes from +9 to -9
-4x+9-9= -4x+12-9
-4x= -4x+3
move -4x to the left side
sign changes from -4x to +4x
-4x+4x= -4x+4x+3
0= 0+3
0= 3
Answer: no solution
it is the there'd one
if this is wrong sorry
-8
y = mx + b
-2 = 2/3(9) + b
-2 = 6 + b
b = -8
