OPT 2 Readines: TOPIC 1 & 2 Linear Functions & Solving Linear E

The circumference C of a circle is given by the equation C = 2πr, where r is the radius. Solve the function for π.

• π = C / 2r

• π = 2C / r

• π = r / 2C

• π = C / r

Which is a true comparison for the following functions, f(x) and g(x)?

• the y-intercept of f < the y-intercept of g

• the slope of f = the slope of g

• f(-2) > g(-2)

• f(1) = g(1)

• f(n) = 2n + 3

• f(n) = 2n + 5

• f(n) = 2n - 3

• f(n) = 2n - 5

Maria has started swimming. She swims 2 laps the first week. Her goal is to swim 2 laps more than her distance for the previous week. Which explicit formula represents this scenario?

• a_n = 2 + 2n - 1

• a_n = 2 + 2(n + 1)

• a_n = 2 + 2(n - 1)

• a_n = 2 + 2(n + 2)

Which linear function represents the following set of points?

• f(x) = 3x + 2

• f(x) = 2x - 4

• f(x) = x + 5

• f(x) = 4x - 1

Which equation represents the line in slope-intercept form for (8x - 2y = 16)?

• ( y = 4x - 8 )

• ( y = -4x + 8 )

• ( y = 8x - 4 )

• ( y = 2x - 8 )

Rewrite the equation 3(2 + 4x) = 18 using the Division Property of Equality.

• ( 2 + 4x = 6 )

• ( 2 + 4x = 18 )

• ( 6 + 12x = 18 )

• ( 6 + 12x = 3 )

• b = 2

• b = 1

• b = 3

• b = -1

Which compound inequality has no solution?

• x > 3 and x < -1

• x < 3 and x > 7

• x > 3 or x < -1

• x < 3 or x > 7