Question

Hello. What's the difference between linear and quadratic equations?

Answer 1

liner equation can be written in the form:
\[\large y = ax + c\] ... so 2 coefficients (a and c)
quadratic equations take the form
\[\large y = ax^2 + bx + c\] ... so 3 co-efficients (a,b and c)

Answer 2

drawing wise, linear equations are straight lines, quadratics are (usually) parabolas