As a graph cuts the axis when the y coordinate is zero, then we substitute \(y = 0\) into the quadratic equation and use algebra to solve. We need to factorise the trinomial. When factorised this ...
A quadratic ... given in the equation. Eg y = 4 – x² The y value is always 4 subtract the square of x. We can make a table of values to create the coordinates. We use substitution to calculate ...
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