Answer:
7y = x + 28
Step-by-step explanation:
Given x = 7t and y = t + 4
Here t is the parameter Now to remove it express one of it in terms of the variables (like x or y)
Given x = 7t
from this we can write
Now substitute this value in the second equation
y = t + 4
Therefore the parameter is eliminated.
Answer:
43b. (-1, 2)
43a. (1, -3)
36b. Yes: (0,9)
Step-by-step explanation:
<u>43b</u>. x+y=1
-x+y=3
----------------------
2y=4 > y=2
2+x=1 > x=-1
check:
2(-1)+2=0
0=0
<u>43a</u>. can you figure this one out by yourself and then check it? If you can't I will show my work. The answer is above. :)
<u>36b</u>. y-(0)^2=9
y=9
Answer:
$2/mile
Step-by-step explanation:
Look at the graph. We see that two points on this line are (0, 2) and (9, 20).
The "run" is (9 - 0), or 9, and the "rise" is (20 - 2), or 18.
The slope of this yellow line is thus m = rise / run = (18 dollars) / (9 miles) = $2/mile
This slope of the yellow line is the incremental taxi fare per mile traveled and is speed of the car and is m = 2 mph.
Your answer is 1/5 Hope this helps :D