Grade 8 Algebra: Interpreting Function Graphs

Name: ______________________Date: ____________Score: ____ / 8

Level 1

Initial values and changes

Directions: Read the graph in each context. The horizontal axis is time t; the vertical axis is the stated quantity.

1.
$\text{Water}$ $\text{in}$ $\text{liters,}$ $\text{time}$ $\text{in}$ $\text{minutes.}$ $\text{How}$ $\text{much}$ $\text{water}$ $\text{is}$ $\text{there}$ $\text{initially?}$
2.
$\text{Water}$ $\text{in}$ $\text{liters,}$ $\text{time}$ $\text{in}$ $\text{minutes.}$ $\text{When}$ $\text{is}$ $\text{the}$ $\text{tank}$ $\text{empty?}$
3.
$\text{Height}$ $\text{in}$ $\text{cm,}$ $\text{time}$ $\text{in}$ $\text{weeks.}$ $\text{What}$ $\text{is}$ $\text{the}$ $\text{initial}$ $\text{height?}$
4.
$\text{Height}$ $\text{in}$ $\text{cm,}$ $\text{time}$ $\text{in}$ $\text{weeks.}$ $\text{What}$ $\text{is}$ $\text{the}$ $\text{height}$ $\text{at}$ $\text{3}$ $\text{weeks?}$
5.
$\text{Savings}$ $\text{in}$ $\text{dollars,}$ $\text{time}$ $\text{in}$ $\text{weeks.}$ $\text{How}$ $\text{much}$ $\text{is}$ $\text{saved}$ $\text{initially?}$
6.
$\text{Savings}$ $\text{in}$ $\text{dollars,}$ $\text{time}$ $\text{in}$ $\text{weeks.}$ $\text{How}$ $\text{much}$ $\text{is}$ $\text{saved}$ $\text{at}$ $\text{2}$ $\text{weeks?}$
7.
$\text{Water}$ $\text{in}$ $\text{liters,}$ $\text{time}$ $\text{in}$ $\text{minutes.}$ $\text{How}$ $\text{much}$ $\text{is}$ $\text{left}$ $\text{after}$ $\text{1}$ $\text{minute?}$
8.
$\text{Height}$ $\text{in}$ $\text{cm,}$ $\text{time}$ $\text{in}$ $\text{weeks.}$ $\text{How}$ $\text{much}$ $\text{does}$ $\text{the}$ $\text{height}$ $\text{increase}$ $\text{in}$ $\text{4}$ $\text{weeks?}$