ANSWER
(-2, 3)
EXPLANATION
Rachel starts at (-4, -5) and walks all the way to (-3, -1) in one hour.
We want to find her position if she continues at the same rate for another hour.
What we can do to find this position is to first find the slope of the line that connects her starting point and current point in fraction form.
That is:
We are going to leave it as a fraction purposely.
The numerator is the change in y while the denominator is the change in x.
This means that the change in one hour occurs by adding 4 to the y cordinate and adding 1 to the x cordinate.
Therefore, after another hour, her new cordinate will be:
(-3 + 1, -1 + 4)
=> (-2, 3)
That is the position that she will stop.
For the answer to the question above, to solve the average increase between hours 2 and 4, first let as solve the the number of student in each hour
x = 2f(x) = 4x -1f(2) = 4(2) - 1f(2) = 7
x = 3f(x) = 4x -1f(3) = 4(3) - 1f(3) = 11
x = 4f(x) = 4x -1f(4) = 4(4) - 1f(4) = 15
increase in hours 2 to 4increase per hour = 15 - 7 / 4 - 2increase per hour = 4 students per hour
Answer:
1/2
Step-by-step explanation:
Answer:
23:2 is 25
Check the answer
Step-by-step explanation:
At least I think that's how you do it
3x - 2y = 5
-2x + 2y = -2
--------------------add
x = 3
3x - 2y = 5
3(3) - 2y = 5
9 - 2y = 5
-2y = 5 - 9
-2y = -4
y = -4/-2
y = 2
solution is (3,2)
ur system of equations is : 3x - 2y = 5 : -2x + 2y = -2