Back to Create equations in two or more variables — Problem 2 · Task Set 25

HSA.CED.A.2 Tutor Intake — Two-Variable Equations and Graphs

This short check helps your tutor understand where to start. Answer each question on your own. If you are not sure, give your best try — every response helps your tutor plan your sessions.

Grade 9·8 problems·~12 min·Common Core Math - HS Algebra·standard·hsa-ced-a-2

Work through problems with immediate feedback

Concepts

A tank holds 500 liters of water and drains at 20 liters per minute.
The equation is $V = 500 - 20t$ , where $V$ is the volume (liters) and
$t$ is the time (minutes).

Which axis assignment is correct when graphing this equation?

$t$ on the $x$ -axis labeled "Time (minutes)"; $V$ on the $y$ -axis
labeled "Volume (liters)."

$V$ on the $x$ -axis labeled "Volume (liters)"; $t$ on the $y$ -axis
labeled "Time (minutes)."

Either variable can go on either axis — it does not matter.

$t$ on the $x$ -axis; $V$ on the $y$ -axis, but no units are needed
because the equation already shows the relationship.