Answer
False
Work Step by Step
The function
$$y=2x^2+3$$
is not of the form
$$f(x)=mx+b$$
with real numbers, $m$ and $b$. It involves $x$ to the second power which would plot as a parabola, not a line.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.