Function? Domain and Range
Is the following a function?
{(-5, 4), (-1, 4), (2, 3), (4, -5)}
YEP
f(x) = 4x - 1
find f(-2)
-9
Write the equation in standard form
-4x + 6y = 12
2x - 3y = -6
Are the lines parallel, perpendicular, or neither?
2x + y = 8 and y = -2x - 1
parallel
What is the y intercept?
y = 2x - 2
(0, -2)
What is the range of the relation?
{(-6, 3), (0, 4), (1, 3), (5, 2)}
y={2, 3, 4}
f(x) = 4x - 1
if f(x) = 19, find x
x = {5}
Write the equation in slope intercept form
6x - 2y = 2
y = 3x - 1
Are the lines parallel, perpendicular, or neither?
8x - 6y = 42 and 3y = -4x + 9
parallel
What is the y intercept?
4y = 9x + 16
(0, 4)
Is the relation a function?
y=-5x + 1
YEP
f(x) = |5x - 6|
find f(-7)
41
Write the equation in slope intercept form
3y - 4x + 6 = 0
y = 4/3x - 2
Are the lines parallel, perpendicular, or neither?
9x - 6y = -20 and 3y = 2x - 11
perpendicular
What is the x intercept?
-2x + y = -2
(1, 0)
What is the domain of the relation?
y = -x^2 + 3
All Real Numbers
f(x) = x^2 - 2x + 1
find f(-3)
16
Write the equation in standard form
1/2x - 10 = 1/3y
3x - 2y = 60
Are the lines parallel, perpendicular, or neither?
2x - y = 14 and 4x + 2y = 10
neither
What is the x intercept?
6x + 5y = -15
(-5/2, 0)
What is the domain AND range of the relation?
y = x^2 - 4x - 5
Domain: all real numbers
Range: [-9,inf)
f(x) = |3x - 2|
if f(x) = 7, find x
x = {-5/3, 3}
Write the equation in standard form AND slope intercept form
3x - 3y = 3
standard: x - y = 1
slope intercept: y = x - 1
Are the lines parallel, perpendicular, or neither?
y = -4 and y = 3
parallel
What is the x intercept?
7/3x - 1/3y = 1
(3/7, 0)