Answer:
<u>41 years ago</u>
Step-by-step explanation:
Let the no. of years ago be x.
Then, the equation we need would be :
=> 80 - x = 3(54 - x)
=> 80 - x = 162 - 3x
=> 2x = 82
=> x = 41
Sally's mother was 3 times her age <u>41 years ago</u>
Checking
=> Sally = 54 - 41 = 13
=> Mom = 80 - 41 = 39
=> 13 x 3 = 39 [∴Verified]
Answer:
D. y= -6x+1
Step-by-step explanation:
A is wrong becaue it i the most steep. The larger the slope the steeper it will be. If you still do not understand it may help you to roughly graph the lines on a pieace of paper.
**Note: in y=mx+b, m is the slope**
9514 1404 393
Answer:
B. Up 1 and 2 to the left
Step-by-step explanation:
The second graph (blue) is up 1 and 2 left of the first graph (red).
__
You can compare the given equations to the form ...
y = a(x -h)^2 +k
For the first graph, we have (h, k) = (6, -1).
For the second graph, we have (h, k) = (4, 0).
Then the amount added to the first to make the second is ..
(4, 0) -(6, -1) = (-2, 1) . . . . . . a translation 2 left and 1 up