Based on the equation, which of the following must be true? A temperature. The temperature T t varies sinusoidally on a certain day in December. The minimum temperature is 35 degrees Fahrenheit at midnight. The maximum temperature is 50 degrees Fahrenheit at noon. Let t be the number of hours since. Each of the following temperature ranges is in degrees Fahrenheit. You can view more similar questions or ask a new question.
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A slope of zero is equivalent to level — no marble movement. Slope or Gradient We call m the slope or gradient of the line. It represents the change in y-value per unit change in x-value. Here are some points on the line. It is not known why the letter m was chosen for slope; the choice may have been arbitrary. A positive slope means that two variables are positively related—that is, when x increases, so does y, and when x decreases, y decreases also.
Graphically, a positive slope means that as a line on the line graph moves from left to right, the line rises. Slopes come in 4 different types: negative, positive, zero, and undefined.
In our pizza example, a positive slope tells us that as the number of toppings we order x increases, the total cost of the pizza y also increases.
For example, as the number of people that quit smoking x increases, the number of people contracting lung cancer y decreases. Zero Slope and Graphing Just like in the bicycling example, a horizontal line goes with zero slope. One thing to be aware of when you graph, however, is that this horizontal line can be any height.
For example, the picture you see here has three horizontal lines. In each case the slope is zero. Slope of a horizontal line. When two points have the same y-value, it means they lie on a horizontal line. The slope of such a line is 0, and you will also find this by using the slope formula.
A horizontal line has slope zero since it does not rise vertically i. To draw a horizontal line on paper, use a ruler. Place it parallel to the horizontal edge of the paper and draw a line along the ruler. To draw a horizontal line on a coordinate plane, Join all the points to get the horizontal line.
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