Air Test Algebra

Write the slope-intercept form of the equation for the line.

• y = –0.9x + 0.4

• y = 0.9x + 0.4

• y = 0.9x – 0.4

• y = –0.9x – 0.4

What do you expect the slope of the line to be

from looking at the graph?

• a. The slope is negative

• b. The slope is positive

Tags

CCSS.8.EE.B.5

What equation in slope intercept form

represents the line that passes through the

two points?

• y = − 10/13x – − 10/13

• y = − 10/13x + − 10/13

• y = − 13/10x + 9/20

• y = − 13/10x – 9/20

The graph below represents one function, and the

table represents a different function. How are the

functions similar? How are they different?

• The function have the same slope and the

  same y-intercept.

• The functions have the same y-intercept but

  different slopes.

• The functions are both linear, but have

  different slopes and different y-intercepts.

• The functions have the same slope, but

  different y-intercepts.

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Graph the equation. y = 2x – 2

• 
• 
• 
• 

What are the slope and y-intercept of the graph of the given equation?

• The slope is 9 and the y-intercept is −4/9.

• The slope is −4/9 and the y-intercept is 1/9.

• The slope is 1/9 and the y-intercept is 4/9.

• The slope is 4/9 and the y-intercept is 1/9.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

An air traffic controller is monitoring the

altitudes of four planes. The four equations below

show y, the distance in feet of each plane above

the ground, after t minutes of descent.

Plane A: y = −400t + 12,000

Plane B: y = −800t + 28,000

Plane C: y = −200t + 13,500

Plane D: y = −500t + 30,000

Which plane is descending at the slowest rate?

• Plane A

• Plane B

• Plane C

• Plane D

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

An air traffic controller is monitoring the altitudes of four planes. The four equations below show y, the distance in feet of each plane above the ground, after t minutes of descent.

Plane A: y = −400t + 12,000

Plane B: y = −800t + 28,000

Plane C: y = −200t + 13,500

Plane D: y = −500t + 30,000

Which plane began its descent from the

highest altitude?

• Plane A

• Plane B

• Plane c

• Plane D

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

Graph the equation.

y – 1 = −2(x – 4)

• 
• 

Write an equation in point-slope form for the line through the given point with the given slope.

(6, 9); m = –2

• y + 9 = –2(x + 6)

• y – 6 = –2(x – 9)

• y – 9 = –2(x – 6)

• y + 9 = –2(x – 6)