Write an equation in Slope-intercept form
m = -4
b= 5
y= -4x + 5
(5, 7) and (3, 6)
What is 1/2?
When visiting Baltimore, MD, you need to rent a taxi to get from your hotel to the National Aquarium. The taxi company charges a flat fee of $3.00 for using the taxi and $0.75 per mile. Write an equation in slope/intercept form that models this situation. define your variables
y = .75x + 3
y = cost
x = miles
What is the slope formula of a line?
(y2-y1 ) / ( x2-x2)
Convert the equation into slope intercept form
(y=mx + b)
6x + 3y = 18
y = -2x + 6
m= 2/3
b= -4
y= 2/3x - 4
Cameron is designing a calendar as a fund-raising project for math class. The cost of printing is $500, plus $2.50 per calendar. Write an equation in slope-intercept form that models the total cost of printing the calendars. define your variables
y = 2.5x + 500
x = calendars
y = cost
Do the equations below represent lines that are parallel, perpendicular or neither?
y = 1/4x - 3
y = -1/4x + 2
Neither
Convert the equation into slope intercept form
(y=mx + b)
12x - 4y = 36
y = 3x - 9
m = -2 and point (0, -4)
y = -2x - 4
4x + 6y = 15
-2/3
Cameron is designing a calendar as a fund-raising project for math class. The cost of printing is $500, plus $2.50 per calendar. How many calendars can he print if he has $2300
720 calendars
In the equation of linear function: y=-4x-2, this is the y-intercept.
What is -2?
What is the slope of the equation below?
3x + 4y = 15
-3/4
m = 3 and point (-2, 10)
y = 3x + 16
6x - 8y = 12
3/4
An airplane 30,000 feet above the ground begins descending at a rate of 2,000 feet per minute. Write an equation to model this situation. define your variables
x = minutes y = feet
Are the equations below parallel, perpendicular or neither?
y = 2x + 4
y = -1/2x - 6
Perpendicular
Use the cover up method to find the x and y intercepts of the equation below. List your answers as coordinate pairs
3x - 4y = 12
(4, 0) and (0, -3)
(-3, 5) and (3, 7)
y = 1/3x + 6
(-2,-10) and (-5, -12)
Jason has a savings account with some money already in it. He decides to start saving more money. We don't know how much money was already in his account but after 4 weeks of savings he had $390 in his account and after 11 weeks he had $810. Write an equation in slope intercept form to represent this situation. define your variables
y = 60x + 150
y = money saved
x = weeks
Determine if the lines are parallel, perpendicular or neither.
2x + 5y = 15
y = -0.4x + 4
parallel
Use the cover up method to find the x and y intercepts of the equation below. List your answers as coordinate pairs
5x - 6y = -60
(-12, 0) and (0, 10)