Answer:
Let f be a function. If any horizontal line intersects the graph of f more than once, then f does not have an inverse. An absolute value function (without domain restriction) has an inverse that is NOT a function. That's why an absolute value function does not have an inverse function。
well, the numeric difference will be 136 - 80 = 56, now, if we take 80 (original price) to be the 100%, what is 56 (the increase) in percentage off of it?
1st multiply the top equation by -1 to get -3x - y = -17 then add the 2 equations together to get:
4x + y - 3x - y = 18 - 17
x = 1 (simplified down)
Now plug the 1 into either equation
4(1) + y = 18
4 + y = 18
y = 18 - 4 = 14
Your point is (1, 14)
Answer:
Solve the inequality as though it were an equation. The real solutions to the equation become boundary points for the solution to the inequality. Make the boundary points solid circles if the original inequality includes equality; otherwise, make the boundary points open circles.
Step-by-step explanation:
