Graphing Inequalities from math input box

How do I graph the inequality from a math input box into a graph?
The student’s input is y < -4x +3 and I would like for them to see the graph after they submit an answer.
I tried this from an activity that I found, but it did not work.
latex =
when expressionInput.submitted expressionInput.latex
otherwise “”

function(“f”): simpleFunction(latex,“x”)

This is my activity: Understanding Linear Inequalities • Activity Builder by Desmos

Thank you for your help!

Try slide 3 (currently):

Thank you so much for your help! Being able to create my activities will really impact the learning and performance of my students. Thanks a lot!