Answer:
3:9
Step-by-step explanation:
You isolate one variable. Let's say that x will be that variable in the first equation:
x-y=1
+y +y
x=y+1
So now you have the equation for x. All you have to do is substitute it into the other:
x=y+1
(y+1)+y=3
Combine like terms and solve:
2y+1=3
-1 -1
2y=2
2y/2=2/2
y=1
Now that you have the value of one, substitute it into either of the equations to find x.
If you put it in the first:
x-1=1
+1 +1
x=2
If you put it into the other, you would get the same answer.
Therefore, y=1 and x=2
Y = 2/x
x must not have the value of 0 because x is used as a denominator.
A denominator must not have a value of 0 because the overall value of the fraction is undefined.
x may be any positive or negative integer.
x = 1
y = 2/1 = 2 ⇒ (1,2)
x = 2
y = 2/2 = 1 ⇒ (2,1)
x = 3
y = 2/3 = 0.67 ⇒ (3, 2/3)
x = -1
y = 2/-1 = -2 ⇒ (-1,-2)
x = -2
y = 2/-2 = -1 ⇒ (-2, -1)
x = -3
y = 2/-3 or -0.67 ⇒ (-3, -2/3)
<h3>
Answer: A) zero velocity</h3>
Explanation:
Recall that the slope is equal to the rise/run.
Rise = change in y = change in distance
Run = change in x = change in time
If we have a horizontal line, then there is no change in y. The rise would be 0 here. The run can be anything you want. Let's just call it x
Slope = rise/run = 0/x = 0
Therefore, all horizontal lines have a slope of 0.
The slope of a distance time graph represents the velocity because
velocity = (change in distance)/(change in time) = rise/run = slope
for example, a velocity of 10 meters per second represents a change of 10 meters over 1 second. The rise here woud be 10 meters and the run would be 1 second.
