Question

Based on the graph of y= x2 - 2x-3, what is the positive x-intercept ?

Answer 1

writing the equation like this: y = (x-3)(x+1) should help.
The x-intercept is when y=0 so just solve this equation: 0 = (x-3)(x+1)

Answer 2

to find x intercept, set y = 0

Answer 3

therefore x2 - 2x-3 = 0 and solve for x

Answer 4

x=-1 or x=3

Answer 5

thank you