Math (Intercepts, graphing) Follow the steps below to graph the function: f(x) = 2x + 4x-6 Sect Qua) Recall that if a > 0, then the parabola will open up and if a < 0, then the parabola will open down. Identify a: Will the parabola open up or open down? b) In College Algebra we saw that the vertex of a parabola can be found using the formula Use the formula to find the vertex of the parabola. Step 1: Find the x-value: (-(-)). x = 20 Step 2: Find the y-value: f(-) just means to plug your x-value you got above into your function to find the y-value. So take the x-value you got and substitute it back in the original function to find the y-value of the vertex: y = 2(________) + 4(_______) 6 = Step 3: Use your x- and y-values to write the vertex as an ordered pair: ( c) Find the x- and y-intercepts. Write your answers as ordered pairs. y-intercept: d) Plot the vertex and intercepts and connect with a smooth curve to graph the function. 10 8 6 4 S x-intercepts: functions! Let's try another function f(x)= 10 86-4-2 2 4 6 8 10 2 4 aj Match each function 6 8