Math 8 Unit 3-4 DCA Review

Blake has driven for Uber for 3 years. He charges customers a $5.50 pick up fee and then $0.35 per mile. Write a function that can be used to find t, the total cost Blake would charge if he delivered to a customer m miles away. Move the correct answer to each box. Not all answers will be used.

t = ​ (a)   m + ​ (b)  

• 0.35
• 5.50
• -0.35
• 3.00
• -5.50

The ticket sales for a concert started at 4:00 P.M. The table shows the linear relationship between the number of tickets remaining and the number of hours since 4:00 P.M. Which function can be used to find y , the number of tickets remaining x hours since 4:00 P.M.?

HINT

Use cheater method (Desmos)

https://www.desmos.com/testing/texas/graphing

Which set of order pairs represent y as a function of x?

Select TWO answers.

HINT

Ys can cheat on Xs

Xs cannot cheat on Ys

• {(2, 4), (-1, 4), (3. 4), (5, 4), (-6, 4)}

• {(2, 3), (5, 9), (-3, 4), (2, 7), (-5, 10)}

• {(-4, 5), (-5, 6), (-6, 9), (-4, 3), (-10, 2)}

• {(-2, 6), (-4. 7), (-7, 8), (3, 5), (5, 3)}

• {(4, 5), (4, 7), (4, 8), (4, -3), (4, 2)}

Which graph does NOT represent y  as a function of x?

HINT

vertical line test

• 
• 
• 
• 

Organize these options into the right categories

HINT

Ys can cheat on Xs

Xs cannot cheat on Ys

Groups:

(a) FUNCTION

,

(b) NOT A FUNCTION

• 
• 
• 
• 
• 

Organize these options into the right categories

HINT

Ys can cheat on Xs

Xs cannot cheat on Ys

Groups:

(a) FUNCTION

,

(b) NOT A FUNCTION

• 
• 
• 
• 

The relationship ​ (a)   y as a function of x because each value of ​ (b)   is associated with ​ (c)   value of ​ (d)  

HINT

Ys can cheat on Xs

Xs cannot cheat on Ys

• does not represent
• x
• more than one
• y
• represents
• only one

Mathematical Equivalence

OFF