So, the slope is -3x, the coefficient is a negative number so the line must be as x decreases, y increases and as x increases, y decreases. In this case, the first graph and the last graph represent the negative slope. However, the function has an y-intercept
This is a linear equation, the graph of a line. This function is in slope intercept form, y=mx+b . In this example the slope is =riserun=3=31 and the y -intercept is −2
