![]() We can substitute the x and y coordinates of one of the points to rearrange the equation. Then we need to figure out, the y-intercept. Computers during tests is distracting and invites the potential of cheating. It’s a great tool, but come test-time, it was TI all the way. Set it to equal, which is the equation of the gradient. Answer: I actually used Desmos quite a bit in college. Make two points, and - you can write subscripts by typing the underscore '_', and then make a variable. Then mess with the two sliders and notice how one controls the steepness and the other the y-intercept. Write the expression, you will see that the two variables are automatically formed when you press enter. Full instructions on this graph are in the examples section. For example, if you have two points, you can work out the gradient and y-intercept of the line formed by these two points, and then graph them. You can then take the same variables and use them in another equation. Try typing and pressing enter, you will find that the two variables are automatically formed. When you need to make calculations that involve whole numbers, or even numbers or you can make a switch with just two states, or more if you want! Restrictions are always useful, you don't want your graph flying off the grid or your line getting infinitely steep! By default the maximum is set to 10 and the minimum is set to -10. ![]() For example, you could use the indefinitely play to record time in your graph. Most of the time you'll be looping your animations, however the others are also useful. There are four animation modes: looping, repeatedly playing in the same direction, one time run, and indefinitely running. Step setting the increments in which you can move the slider.Restrictions setting the maximum and minimum values the slider can take.Here are the four parameters you can control on a variable/slider: Now you can slide your slider or press the play button to watch an animation play out, if you have a graph connected to the variable. ![]() To create a variable, simply write a letter followed by a '=' sign and a number, a slider will appear. ![]()
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