Answer:
A line is increasing if it goes up from left to right. The slope is positive, i.e. m > 0 {\displaystyle m>0} .
A line is decreasing if it goes down from left to right. The slope is negative, i.e. m < 0 {\displaystyle m<0} .
If a line is horizontal the slope is zero. This is a constant function.
If a line is vertical the slope is undefined (see below).
A) 7x+5 = 2x-35
-2x -2x
5x + 5 = -35
-5 -5
5x = -40
x = -8
b) x/3 - 7 = -5
+7 +7
x/3 = 2 .. Multiple by 3 both sides
x = 6
c) 4x+5 = 4x+1
-4x -4x
1 = 5 , This is
NOT true ..
NO SOLUTIONS
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