Answer:
y - 13 = 3(x - 5)
Step-by-step explanation:
x represents week and y represents inches. Week 2 and week 5 = 2 to 5 = three number difference. The inches which is 4 and 13 have a 9 inched difference. So like I said week represents x and y represent inches so now u have to find the slope, which would be y/x so replace it with the numbers we got so it would now be 9/3. The simplified version would be 3. So the slope is 3.
Point-slope equation: y-y^1=m(x-x^1), y^1 and x^1 are just some random points on the graph, but since we don't have a graph we can use either week 2 and 4 inches or week 5 and 13 inches because if this were a graph, those would be existing points on the graph. And m is the slope so just replace m with 3. We'll use 5 and 13 so: y - 13 = 3(x - 5)
side note: kinda took a long time sorry haha, I had to refresh my knowledge on point-slope equations since it's been a long time since i learned it.
Answer:
Graph D
Step-by-step explanation:
< or > require a circle that is NOT shaded in so we can eliminate Graph B and Graph C
The arrow is >, and it is pointing this way--> so you shade in towards the right. Hope this helps!
Eliminate one of the variables..
2x + 2y = 28
2x = -2y + 28
8x - 2y= 22
8x = 2y + 22
x = 0.25y + 2.75
combine equations...
-y +14 = 0.25y + 2.75
solve for the variable..
-y - 0.25y = 2.75 - 14
-1.25y = -11.25
y = 9
replace y with 9 in previous equation..
x = -y + 14
x = -9 + 14
x = 5
so y = 9 and x = 5
I hope I did that right good luck!
Answer:
r = 7
Step-by-step explanation:
The equation of a circle centred at the origin is
x² + y² = r² ( where r is the radius )
x² + y² = 49 ← is in this form
with r² = 49 ⇒ r = 
= 7
Answer:
C. 14 feet
Step-by-step explanation:
What we know:
A wire is attached to a small tree 6 1/2 feet above the ground.
The distance from the bottom of the tree to the stake is 8 feet.
Add 6 1/2 and 8 to get 14 1/2, which is close to 14 feet.
