PHP-gd not working

[Karentutor1]

I am installing
https://www.phpcaptcha.org/
It requires php-gd

Sudo yum -y install php-gd
Results in
Loading mirror speeds from cached hostfile
ius: iad.mirror.rackspace.com
remi-php70: ca.mirror.babylon.network
* remi-safe: ca.mirror.babylon.network
Package php-gd-7.0.19-1.el7.remi.x86_64 already installed and latest version
Nothing to do

However running the test file for the PHP captcha says gd is missing?