Graph this function: f(x) = x2 - 4x - 5
Step 1: Identify a and b.
a= , b=

a= 1 b= -4

Step 2 find the vertex formula x = -b/2a

X= 4/2(1)

X= 2

Find the y-coordinate of the vertex: f(x)= 2^2-4(2)-53

F(2)= -9

Step 3: plot the vertex

(2,-9)

Step 4: factor the function to find the x- intercepts

X-intercepts are: (5,0) and (-1,0)

Step 5: plot x-intercepts

Step 6: find y-intercept

F(0)= -5

Step 7: plot -5

Done :)

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