Analyzing Functions Equation

What would the graph of the equation x = -4 look like? 

• Horizontal line

• Vertical line

• Slanted line

• No way to tell

Which equation best represents the relationship between x and y in the table shown?

• y= 5x+5

• y=1/5x+5

• y=15x+5

• y=10x+5

Jenny writes the equation y = 1/2x +5.
Why is she incorrect?

• The slope is -2, the equation should be
  y = -2x + 5

• The y-intercept is 4, the equation should be y = -2x + 4

• The slope is -1/2, the equation should be
   y = -1/2x + 5

• The y-intercept is -5, the equation should be y = -2x - 5

Find the slope of the line.

• 1/4

• -1/4

• -4

• 4

find the slope

• 3/2

• -3/2

• (-0,-3)

• none of the above

What is the equation for this graph?

• y = ⅔ x + 3

• y = -⅔ x + 3

• y = ⅔ x - 3

• y = -⅔ x - 3

Which of the following situations could be descried by the equation y= -25x + 120

• There are 120 people in the football stadium, and 25 more are entering each hour.

• A plumber charges $25 for a house call and $120 per hour.

• A teacher has 120 students. Her third period has 25 students

• There are 120 gallons of water in a tank. It releases water at a rate of 25 gallons per minute

• Taylor can write 6 words per minute
• Taylor can write 25 words per minute
• Taylor can write 50 words per minute
• Taylor can write 150 words per minute

Given the equation y = 2x + 5 , where x is the number of homework questions and y is the number of minutes it takes to do all the homework, what does the y-intercept of the line mean in real world context.

• For every homework assignment, it takes 5 more minutes to complete.

• For every homework assignment, it takes 2 more minutes to complete.

• It initially takes 5 minutes to get homework out and start working.

• It initially takes 2 minutes to get homework out and start working.

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts