Checkpoint 4 ? Problem Solving ? Year 9 Unit 3

1 Two lines can intersect at most:

A) 0 pointsB) 1 pointC) 2 pointsD) Infinite points

2 A line and parabola can intersect at most:

A) 1 pointB) 2 pointsC) 3 pointsD) 4 points

3 Break-even is where:

A) Profit is maximumB) Cost equals revenueC) Revenue is zeroD) Cost is minimum

4 For $C = 100 + 10x$ and $R = 25x$, break-even at:

A) $x = 5$B) $x = 6.67$C) $x = 10$D) $x = 20$

5 Vertex of downward parabola gives:

A) MinimumB) MaximumC) Break-evenD) Intercept

6 Parallel lines have:

A) One solutionB) No solutionC) Infinite solutionsD) Two solutions