Exact form -9/20 or in decimal form is -0.45
Answer:
It does show direct variation.
Step-by-step explanation:
Every hour, you receive $8.50. This doesn't change throughout the entire table. On a graph, this would look like a line going through the origin, with points at (1, 8.5). (2, 17), (3, 25.5), and so on.
Answer:
20
Step-by-step explanation:
10 x 1 = 10. 10 x 2 = 20.
It increases exponentially by 4 each year
so you multiply 12 by 4, 9 times to get <span>786,432</span>
Answer:
(1, -1/2)
Step-by-step explanation:
7x - 2y = 8
5x + 2y = 4
I would use elimination to get rid of y
Add the two equations together
7x - 2y = 8
5x + 2y = 4
-------------------------
12x = 12
Divide each side by 12
x =1
Now find y
5x+2y = 4
5*1 +2y =4
Subtract 5 from each side
5+2y -5 = 4-5
2y = -1
Divide by 2
2y/2 =-1/2
y = -1/2
