Step-by-step explanation:
the domain is the set or interval of all valid x values.
the range is the set or interval of all valid y values.
1.
domain = {-1, 2, 5}
range = {0, 2, 3, 7}
function : no, because x = -1 has 2 different y values assigned (7 and 2). that violates the definition of a function.
2.
domain = {-3, -2, -1, 1, 4}
range = {-5, -1, 0, 2}
function : yes. every x bake has exactly one y value assigned.
3.
domain = {4, 6, 7}
range = {-1, 2, 3, 5}
function : no, because x = 4 has 2 different y values assigned (2 and 5).
4.
domain = [-3, 3) "3" is not included, hence the empty dot
range = [-4, 5]
function : yes
5.
domain = (-infinity, +infinity) "infinity" is not a possible value, so the limits are not included.
range = [-1, 2]
function : yes
6.
domain = [-2, +infinity)
range = (-infinity, +infinity)
function : no. except for x = -2 all x values have 2 different y values assigned.
Answer:
x = 4
y = 1
Step-by-step explanation:
use one equation to solve for one variable.
y = 5 - x
Now plug the value of y in the other equation
x - (5-x) = 3
x+x= 3+5
2x=8
x=4
Now use the value of x to find the value of y on the first equation
y = 5 - x
y = 5 - 4
y = 1
Ben has a longer ride because, .875 is bigger than .75
7/8=.875 3/4=.75
Answer:
21
Step-by-step explanation:
everyone likes 21
hope this helped
Answer:
5/9 yards
Step-by-step explanation:
Just subtract 2/9 from 5/9 to find the difference, which is the answer.
