# Math Help - Determine The X-intercept

1. ## Determine The X-intercept

DETERMINE THE X-INTERCEPT OF:

y=loga (x-d)

IN TERMS OF A & D

i dont know how to find the x intercept in equations with Log...

2. Originally Posted by clp_53
DETERMINE THE X-INTERCEPT OF:

y=loga (x-d)

IN TERMS OF A & D
Well the x intercept is when y = 0.

So what value of x corresponds to
$log_a(x - d) = 0$

$a^{log_a(x - d)} = a^0$

$x - d = 1$

$x = d + 1$

-Dan