Writing Linear Equations

A helicopter hovers 40 ft above the ground. Then the helicopter climbs at a rate of 21 ft/s. Write a rule that represents the helicopter’s height h above the ground as a function of time t. 

• h = 40t + 21
• h = 21t + 40
• h = -40t + 21
• h = -21t + 40

Tags

CCSS.HSF-BF.A.1A

A team of divers assembles at an elevation of -10 ft relative to the surface of the water. Then the team dives at a rate of -50 ft per min. Write a rule that represents the team’s depth d as a function of time t. 

• d = -50t
• d = -10t - 50
• d = -50t - 10
• d = -10t

Tags

CCSS.HSF-BF.A.1A

Write the equation of a line through the point (6, -8) with a slope of 1/2. 

• y = 1/2 x - 8
• y = 1/2 x - 11
• y = 1/2 x + 6
• y = 1/2 x - 2

Tags

CCSS.HSA.CED.A.2

Write the equation of a line through the points (3, 2) and (-1, 4). 

• y = 2x - 3.5
• y = -2x + 3.5
• y = -1/2 x + 3.5
• y = 1/2 x + 3.5

Write the equation of a line through the points (-4, 7) and (-6, 9). 

• y = -x + 3
• y = -2x + 3
• y = -x + 7
• y = -2x + 7

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

Given two points on a line, which formula should we go to first? 

• point-slope formula
• slope of a line formula
• slope intercept formula
• standard form

Tags

CCSS.HSA.REI.C.6

Given a slope and a point on the line, which formula should we go to first? 

• slope-intercept form
• point-slope formula
• slope of a line formula
• standard form

What does the y-intercept of the graph represent? 

• the loss in value of the washing machine per year
• the number of years it takes for the washing machine to lose all its value
• the amount the washing machine is worth when you first buy it
• the amount the washing machine is worth after 5 years

Tags

CCSS.HSF.LE.B.5

What does the x-intercept from the graph represent?

• the loss in value of the washing machine over time
• the number of grapes you can eat in five minutes
• the amount the washing machine is worth when you first buy it
• the number of years it takes for the washing machine to lose all of its value

Tags

CCSS.HSF.LE.B.5

Hector and Jeremy want to make some CD’s for their band, Goat Cheese Pizza. Jeremy figures it would cost $330 to produce 1200 CDs. Hector figures it would cost $55 to produce 100 CDs. Write a linear equation.

• y = 4x - 120
• y = 4x + 120
• y = 330x + 1200
• None of the above