Slope and y-intercept

In y = mx + b, which variable represents the y-intercept?

• y

• m

• x

• b

The point where the graph crosses the y-axis.

• Slope

• x-intercept

• y-intercept

What is the slope of the equation:

y = -2x + 5

• 2

• -2

• 5

What is the y-intercept of the equation

y = 5x - 8

• 5

• -5

• 8

• -8

What is the y-intercept of the equation:

y = -5x

• 5

• -5

• 1

• 0

Write the equation that represents this word problem:

Miles makes tacos at a restaurant. He has already made 8 tacos, and can make 3 tacos per minute.

• y= 8x + 3x

• y= 3x + 8

• y= 8x + 3

• y= 3 + 8

• Answer Not Here

Write the equation that represents this word problem:

Nicholas received $100 for his birthday. He decides to spend $20 per day on whatever he wants.

• y= 20x + 100

• y= -20x - 100

• y= 20x - 100

• y= -20x + 100

• Answer Not Here

Bob has $150 in his savings account and saves $40 per month.  Which equation represents the amount Bob has in his account after x months?

• y = 150 + 40
• y = 40x + 150
• y = 150x + 40

Sonya has $40 in her lunch account and pays $2 each day to eat lunch. Which equation can be used to find the amount of money Sonya has left on her account after x days?

• y = 40 + 2x

• y = - 2x + 40

• y = 2 + 40x

• y = 2 - 40x

A fitness club opens with 80 members. Each month the membership increases by 15 members. Which equation represents the relationship between the number of months the club has been opened, x, and the total fitness club membership, y?

• y=15x
• y=15x+80
• y=x+15
• y=80x+15