TEKS.MATH.8.5B

Given the sequence:
 25, 21, 17, 13,...
Write the explicit equation that models the sequence.

• a_n = 4n + 29
• a_n = -4n + 25
• a_n = -4n + 29
• a_n = 4n + 25

Tags

TEKS.MATH.8.5B

Which situation is best represented by the
function f(x), where f(x) = 12x + 5?

• An office-supply store sells x boxes of
  ballpoint pens that contain a dozen pens
  per box for $5 each.
• An Olympic swimmer trains by
  swimming 12 kilometers on each of x
  weekdays and 5 kilometers on each day
  of the weekend.
• An algebra quiz has x problems worth
  12 points each plus 5 extra-credit
  problems worth 5 points each.
• A company sells x baseball caps for $12
  each and charges a $5 shipping fee.

Tags

TEKS.MATH.8.5B

If m=3 and b=6, what is the correct slope intercept equation?

• y=3-6
• y=3x-6
• y=3x+6
• y=6x+3

Tags

TEKS.MATH.8.5B

Which is the graph of y=-x+2?

• A
• B
• C
• D

Tags

TEKS.MATH.8.5B

Joe’s Canoes charges an initial fee of $20 plus $4 an hour. Callie’s Canoes charges a flat rate of $14 an hour. Find the number of hours for which the total amount that both places charge would be the same.

• 3 hours
• 4 hours
• 1 hour
• 2 hours

Tags

TEKS.MATH.8.5B

Write the equation of the line:
Slope = 3 and y-intercept 10

• y = 3x + 5
• y = 3x - 3
• y = 3x + 10
• y = 2x - 2

Tags

TEKS.MATH.8.5B

Bob has $150 in his savings account and saves $40 per month.

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

Tags

TEKS.MATH.8.5B

An internet company charges a $100 set up fee, and then they charge $35 a month after that.  What is the y-intercept?

• $100
• $35
• $135
• $65

Tags

TEKS.MATH.8.5B

Which equation shows a NON-proportional relationship of x and y?

• y = 5x
• y = 2.5x
• y = x + 3
• y = 1/2x

Tags

TEKS.MATH.8.5B

If f(x) = -3x - 8, find f(-1).

• f(-1) = 5

• f(-1) = -5

• f(-1) = -12

• f(-1) = -10

Tags

TEKS.MATH.8.5B