Answer:
Part A - Represents a function
Part B - Doesn't represent a function.
Step-by-step explanation:
A set is just a list of numbers to check. The question is asking you based on the set...
(-5, 8)
(-6, 2)
(-2, -6)
(-1, 8)
(4,6)
if it is a valid function.
At NO point should a function have multiple x values. This fails the <em>Vertical Line Test</em> if visualized on a graph.
For Part A, there are no duplicate x values, meaning this function is valid.
For Part B, there is a duplicate x value - (2,9) & (2,4). Because of this, immediately the function is invalid. There can not be any duplicate x values in a valid function, <u>PERIOD</u>. If graphed, it fails the vertical line test.
Answer:
Fast train speed: 69 km/h
Slow train speed: 39 km/h
Step-by-step explanation:
Fast train:
-Time: 4.33
-Speed: x
-Distance: 4.33x
Slow train:
-Time: 7.66
-Speed: x - 30
-Distance: 7.66(x - 30)
7.66(x - 30) = 4.33x
7.66x - 229.8 = 4.33x
3.33x = 229.8
x = 69
All three of them are variable terms because they all contain a variable and a term would be the whole set of numbers that are separated by the addition signs. in this one the variable terms are 6x^2, 3xy, and 4z<span />
Answer:
6.666666666666... minutes per mile
Answer:
The midpoint of the segment is (-0.5,0.5).
Step-by-step explanation:
Midpoint of a segment:
The midpoint of a segment is given by the mean of its coordinates.
Segment with end points (4,2),(-5,-1)
x-coordinates: 4 and -5
y-coordinates: 2 and -1
x-coordinate of the midpoint:
y-coordinate of the midpoint:
The midpoint of the segment is (-0.5,0.5).
