State the degree of each of the following and identify it as a linear or non-linear relation. a. y = x^2 + 2x + 1 b. 3x + 3y = 6
Rearrange each of the following in slope/y-intercept form, y = mx + b.
a. 3x - 6y + 8 = 0 b. -2x - 5y - 2 = 0
Reorder the following equations in ascending order of steepness.
y = 15x + 5 y = 0.15x - 1 y = x y = x + 100
Identify the slope and y-intercept of each of the following.
a. y = x + 100 b. y = 2x - 5 c. y = 0.5x
Write an equation for the line representing each of the following situations.
A driving range charges $10 per bucket of golf balls.
Car rental agency charges $100 plus $0.30 per kilometre.
Floor installers charge $50 plus $1 per square meter.
Book binding costs $15 plus $0.12 per page.

Explain the significance of the equation y = 50x + 20 which represents the hourly cost of a car repair.