Solve Equations
What is the slope and y-intercept of
y=2x - 5
m = 2 and b = -5
Solve the system of equations:
y=3
x=2y
(6,3)
What is this the formula of:
(y2 - y1) / (x2 - x1)
The slope of the line connecting (x1, y1) and (x2, y2)
Identify the slope and y-intercept of
2x + y = 6
m=-2, b=6
Two lines cross each other at the point (-3, 1/2). If we wrote the equations for each line and then solved the system of equations, what would the solution be?
(-3, 1/2)
What are the two forms of linear equations you know?
Slope-Intercept:y=mx+b
Standard form: ax+by=c
Point-Slope Form is the 3rd
2x - 5 = -3x- 40
x=-7
Identify the slope and y-intercept of
y - 3 = 4(x+1)
m=4, b=7
3(x+2) < 4(3-x)
x < 6/7
Solve the system:
x + y = 12
x - y = 8
(10,2)
Identify the slope and y-intercept of A line that goes through (0,2) and (-4,0)
m=1/2; b=2
Rasheed makes a profit of $1.25 for each cell phone he sells. What is the smallest number of cell phones he can sell and earn over $1000?
Rasheed must sell at least 801 cell phones. (If he sells 800, he earns exactly $1000 which is not over $1000)
Solve the system:
2x - 3y = 21
5x + 5y = -10
(3, -5)
What is the definition of a function?
Every input has exactly one output
Solve for x;
2x - 4(2 - x) = 2(15x - 3)
x = -1/12
Taizah needs 4 and 3/4 cups of flour to make a batch of cookies. Each batch makes 25 cookies. How many cups of flour will Taizah need to make at least 100 cookies?
Taizah will need at least 19 cups of flour.
Basketball tickets are $3.00 for students and $5.00 for everyone else. At the last game 200 tickets were sold and $856 was earned. How many tickets were sold to non-students?
128 tickets were sold to non-students
How do you identify an arithmetic sequence?
A list of numbers with a common difference