The gradient tells us that the rate at which the tree grows over time is how many metres every year.

• 3

• 2

• 1/2

• 1/3

Identify the equation that represents this situation.

Lisa buys her t-shirts from an online shop. Shipping costs $13. If she buys 7 t-shirts it would cost her a total of $111.

• 7t+13=111

• 7(t+13)=111

• 13t+7=111

• 7t+13=189

For an equation to be linear, the relationship between the variables must be

• random

• changing

• constant

• proportional

Identify the equation that represents this situation.

Kevin is lifting a 2.5 kg bar that can hold a certain number of weight plates.

He lifts a bar that weighs 6.5 kg, including the bar and the weights.

Identify the linear equation that models the following word problem.

Five less than twice the number and the result is 22.

Determine the y-intercept of the graph of this equation:

y−5=2(x+5)

Identify the linear equations.

Determine the equation that describes this linear graph.

In the form y=mx+c.