Answer
The $x-$ intercept is $1$.
The graph is shown below.
Work Step by Step
The given equation is
$\Rightarrow y=4x-4$
The slope-intercept form is
$\Rightarrow y=mx+b$
$y-$intercept is $b=-4$.
Plot the $y-$ intercept $A=(0,-4)$.
The slope is $m=4$ and
Slope $m=\frac{rise}{run}=\frac{4}{1}$
The next point is $1$ unit right and $4$ unit up from the point $(0,-4)$.
Plot the point $B=(1,0)$.
Draw a line through the two points.
From the graph the line crosses the $x-$ axis at $B=(1,0)$.
Hence, the $x-$ intercept is $1$.