Answer:
(1) Elise earns $10 per hour. How much does he earn for working up to 2 hours?
(a) Write the linear equation.
(b) Draw a table and a graph showing his wages.
Answer:
(a) Let x = the number of hours worked and y = wages
The equation is y = 10x
(b)
Number of hours worked, x 0 1 2
Pay ($), y 0 10 20
(2)Medicine doses are calculated on people's masses. A small child will receive less than a heavier adult.
For a particular medicine the dosage for a 10kg child is 50 millilitres.
(a) Write the equation.
(b) Draw a table and a graph for the dosages for people up to 30kg.
Answer:
(a) Let x = the patient's mass and y = medicine dose
The equation is y = 5x
(b)
Mass (kg), x 10 20 30
Dose (millilitres), y 50 100 150
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