8.EE.2.5, 2.6, F.1.2, 1.3, 2.4 Review

Select all of the equations which represent nonlinear functions.

• $y=-2x+5$

• $y=-x^3+4$

• $y=-3$

• $3x+4=y$

• $x^2+x-4=y$

A puppy's weight in y ounces after x weeks can be represented by $y=1.8x+1.95$ . Which statement is a correct interpretation of this relationship?

• The puppy's weight after 1.8 weeks is 1.95 pounds.

• The puppy's weight when it was born was 1.8 pounds.

• The puppy's weight increases at the rate of 1.8 ounces per week.

• The puppy's weight increases at the rate of 1.95 ounces per week.

What is the rate of change for the relationship shown in the table?

What was Jesse's speed in miles per hour?

Sabrina is going to rent a bicycle while on vacation. There are two rental companies she can choose from. The first company charges $10 plus a rate of $2 per hour until the bicycle is returned. The second company's rental charges can be represented by the equation 𝑐 = 3ℎ + 6 where c represents the rental cost and h represents the number of hours the bicycle is rented. If Sabrina plans to bicycle for 3 hours, what is the least amount she could pay in rental fees?

• $6

• $10

• $15

• $16

A water tank has a hole from which water is leaking at a constant rate. The table below shows the amount of water in the tank at different intervals of time. What is the rate of change for this situation?

• $\frac{3}{10}$

• $-\frac{3}{10}$

• $\frac{10}{3}$

• $-\frac{10}{3}$

What is the initial value for this situation?

Select all of the following which describe the line shown.

• The slope of the line is -1.

• The y-intercept is -1.

• The slope of the line is $\frac{3}{2}$ .

• The equation for this line is $y=-x+\frac{3}{2}$

• The equation for this line is $y=\frac{3}{2}x-1$

The table represents the charges for using the Internet at a cafe.

Which of the following equations represents the relationship between the number of minutes, x, and the amount charged, y?

• $y=6x+0.05$

• $y=0.05x+6$

• $y=20x+6$

• $y=6x+20$

The graph of Line A is shown. What is the slope of the line?