Answer the following.
Determine the $y$y-intercept of $y=2^x$y=2x.
Hence or otherwise determine the $y$y-intercept of $y=2^x-2$y=2x−2.
Determine the horizontal asymptote of $y=2^x$y=2x.
Hence or otherwise determine the horizontal asymptote of $y=2^x-2$y=2x−2.
Consider a graph of $y=5^x$y=5x.
Consider a graph of $y=3^x$y=3x.
Of the two functions $y=4^x$y=4x and $y=5^x$y=5x, which increases more rapidly for $x>0$x>0?