Which graphs of functions decrease over part of the domain and increase over the rest of the domain? On what open intervals do they increase? decrease?

we can identify the period over which the graph is changing in specific way.

we say that function is increasing over an interval if the input values of functions increases within the interval. similarly function is decreasing if its input values decrease within the interval.

idk sry

step-by-step explanation:

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.