You can tell if a graph represents a proportional relationship by identifying the y-intercept, or the point of the line that crosses the y-axis.
If the y-intercept is 0, then the relationship is proportional. This is called a direct relationship.
If the y-intercept is anything other than 0, then the relationship is not proportional. This is called an indirect relationship.
I hope this helps!
Answer: C) 0
The lines are parallel. They never cross. To have a solution, the lines need to intersect. Each intersection is a solution. That's why there are no solutions here. The system is inconsistent.
Note how the slopes are both 1/2 while the y intercepts are different. Parallel lines have equal slopes but different y intercepts.
Domains: 7, -7, 1, 3
Ranges: 3, -5, -2, -9
It is a function because all of the domains are different numbers. If they were the same then this would not be a function.
Answer:
54m-36n
Step-by-step explanation:
9·6m= 54m
9·(-4n)= -36n
54m-36n
Answer:
26.25
Step-by-step explanation:
y=12
x=15
y=kx 12=k×15 k=12/15=4/5=0.8
21=0.8×x
21/0.8=26.25