The sum is 61 for this equation.
Answer:
Month 5 is when it will be at $100
I hope this helps!
Step-by-step explanation:
x---0-----1-----2-----3----4-----5
y-300-260-220-180-140-100
y=40x+300
Parallel slope = 2
This is because the original line has slope 2. Parallel lines have equal slopes.
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Perpendicular slope = -1/2
The original slope 2 or 2/1 turns into -1/2 after flipping the fraction and the sign. Note the original slope and perpendicular slope multiply to -1. This is true for any pair of perpendicular lines where neither line is vertical.
