Identify the explanatory and response variables in the following situation:

there is a strong positive correlation between latitude above the equator and number of hours of daylight on june 21.

a. explanatory: latitude
response: average temperature
b. explanatory: daylight hours
response: latitude
c. explanatory: time of year
response: daylight hours
d. explanatory: latitude
response: daylight hours

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: