Answer:
y = 90
Step-by-step explanation:
A direct variation is
y = kx where k is a constant
30 = k(-3) from the first set of points
30/-3 = -3k/-3
-10 = k
The equation is y = -10x
Let x = -0
y = -10 * -9
y = 90
Answer:
A(-7,2)
Step-by-step explanation:
![\sf\implies \: - 15 - ( - 4) + 17](https://tex.z-dn.net/?f=%20%20%5Csf%5Cimplies%20%5C%3A%20%20-%2015%20-%20%28%20-%204%29%20%2B%2017)
![\sf \implies \: - 15 + 4 + 17](https://tex.z-dn.net/?f=%20%5Csf%20%5Cimplies%20%5C%3A%20%20-%2015%20%2B%204%20%2B%2017)
![\sf \implies \: - 15 + 21](https://tex.z-dn.net/?f=%20%5Csf%20%5Cimplies%20%5C%3A%20%20-%2015%20%2B%2021)
![\boxed{ \tt \: ans \dashrightarrow 6}](https://tex.z-dn.net/?f=%20%5Cboxed%7B%20%5Ctt%20%5C%3A%20ans%20%5Cdashrightarrow%206%7D)
<h3>Remember these laws of integers:</h3>
- (+)(-)=(-)
- (-)(+)=(-)
- (-)(-)=(+)
- (+)(+)=(+)
Answer:
He needs to score a 19
Step-by-step explanation:
First, I found the mean of the three test scores. The mean was below 17 so I knew he needed a grade higher than the ones he already has. So I went up from 18. So my first equation was 15+18+16+19=68. then I divided by 4 which gives you a mean of 17. (Mean=average)
Answer:
If a vertical line intersects the graph in all places at only one point, then the relation is a function.
If a vertical line intersects the graph in some places at more than one point, then the relation is NOT a function.