Linear Equations, Tables and Graphs

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

Jack wants to save up money to buy his math teacher a new calculator for the holidays.

He saves $12 per week. He started off with $30 in his savings. What would be the linear equation to represent this situation?

• y=12x

• y=12x+30

• y=42x

• y=30x+12

A driving range charges $4 to rent a golf club plus $2.75 for every bucket of golf balls you hit. Write an equation that shows the total cost c of hitting b buckets of golf balls.

• c = 2.75b + 4

• c = 2.75b

• c =  4b- 2.75

• c = 2.75b - 4

In this equation, what is the y-intercept?

^{y = 3x - 4}

• 3

• -4

• 4

• 3x

Write an equation that could represent the amount of money in my account

• y = 0x + 3

• y = 3x

• y = x+3

• y = 3x + 1

Write an equation that could represent the amount of money in my account

• y = 15x + 4

• y = 15x

• y = 15 + 4

• y = 4x + 15

Write an equation that could represent the amount of money in my account

• y = -20x + 5

• y = 5x + 20

• y = 20x + 5

• y = -5x + 20