The equations of some straight line graphs contain a negative coefficient close of 𝑥, such as 𝑦 = 5 − 3𝑥. When filling in a table of values for 𝑥 and 𝑦, the substitution close of ...

Squaring positive or negative numbers always gives ... So the graph crosses the \(y\)-axis at (0, 4). The coefficient of \(x^2\) is positive, so the graph will be a positive U-shaped curve.