What is the name of the test used to identify that a graph is a function?
vertical line test
100
Find the x- and y-intercept of the equation.
8x - 3y = 24
x-intercept = (3,0)
y-intercept = (0,-8)
100
(x^4)(3x^3)
3m^7
200
15xy - 4x + 3xy + 8y
18xy - 4x + 8y
200
5a + 9 = 54
a = 9
200
Identify the domain and range.
{(2,10), (5,7),(8,13), (-2,-13)}
D = {2,5, 7,-2}
R = {10,7,13,-13}
200
Find the slope.
(-2,-1) and (3,4)
m= 1
200
(12x^3)^2
144x^6
300
9x^2 - 8 + 3x^2 + 2 - 5x
12x^2 - 5x - 6
300
8(2x - 1) - 5x = 25
x = 3
300
Solve for f(-1)
f(x) = 7x + 3
f(-1) = -4
300
Write an equation that is parallel to the equation.
y = 3x + 2
y = 3x + ANY # except 2
300
x^13/x^8
x^5
400
(15x^2 + 4x - 9) - (8x^2 - 2x +6)
7x^2 + 6x -15
400
3x - 6 = 4x + 8
x = -14
400
What is the slope and y-intercept of the equation?
y = 5x - 2
m= 5
b = -2
400
Solve using substitution.
y = 5x
y - x = 8
(2,10)
400
Suppose the population of a town is 13,248 and is growing 6% each year. Predict the population after 7 years.
y = a(1+%)^x
y= 11,000(1+.06)^7
y= 19,920
500
-5(2x + 3y) + 3(4x - 2y)
2x - 2y
500
5x + 14 - 2x = 9 - (4x + 2)
x = -1
500
What is the slope and y-intercept of the equation?
y = -2x - 5
m = -2
b = -5
500
Solve using elimination.
5x + 4y = 1
3x - 4y = 7
(1,-1)
500
The owner of a 1960 Ford Mustang sold the car at an auctoin. The owner bought it in 1984 when it's value was $14,000. The value increased 5% per year.
Seven years later what is the value of the car?