We generate these coordinates by substituting values into the linear equation. STEP 1 - Draw a table of values ... the values. For example y = 2x + 1 The y value is always '2 lots' of the x ...

For example, the simultaneous equations \(3a + 2b = 17\) and \(4a - b = 30\) have no common coefficient as the coefficients of \(a\) are 3 and 4, and the coefficients of \(b\) are 2 and -1.