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A Frenulum Frenulums hold tissue that normally couldn't hold itself in position, it is fiberous and stretchy. You have two. one to hold your tongue from falling down your throat, and to keep your foreskin over your Glans.
so you can bend if you eat food
line
A vertical line goes upwards, and a horizontal line goes across.
A vertical line goes straight up an down, so a vertical line segment is a line segment that goes straight up and down. Simple.
you are slowing down
It goes from left to right whereas a vertical line goes up and down
it goes down
A vertical line goes up and down otherwise to say it goes straight up
When the coefficient is positive, the line goes up and to the right.
a line that goes up and down
Goes down and to the right