Interactive practice questions
Beth’s income is based solely on the number of hours she works, and she is paid a fixed hourly wage. She earns $\$750$$750 for working $30$30 hours.
Which of the following graphs correctly plots her income against her hours worked?
How much does Beth earn each hour?
Let $y$y represent Beth’s income after working $x$x hours. Form an equation relating $x$x and $y$y.
Determine Beth's income when she works $25$25 hours.
How many hours must Beth work if she wants to earn $\$125$$125?
The cost of running a particular business is $\$120$$120 an hour.
Valentina left for a road trip at midday. The following graph shows the total distance travelled (in kilometres) $t$t hours after midday.
The table shows the linear relationship between the number of plastic chairs manufactured and the total manufacturing cost.