Working with formulas > Formulas and the Graphic Calculator
1234Formulas and the Graphic Calculator

Theory

If a formula that decribes the relationship between x and y is given in the form y = ... then y is called a function of x .
In the corresponding graph y is always chosen on the vertical axis.

  • In the formula y = x 2 + 4 y is a function of x .

  • In the formula P = 0.052 v 3 P is a function of v .

  • The formula a + 2 b = 6 can be written in two ways:

    • a = 6 2 b , where a is a function of b .

    • b = 3 - 0.5 a , where b is a function of a .

You can enter formulas given in the form y = ... into the graphical calculator.

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