(0,720)(12,1080)
slope = (1080 - 720) / (12 - 0) = 360/12 = 30 <== slope
y = mx + b
slope(m) = 30
(0,720)...x = 0 and y = 720
sub and find b, the y int
720 = 30(0) + b
720 = b <== ur y int
ur equation : y = 30x + 720
ur slope is telling u that for every year, the value of ur coins goes up by 30 bucks
the y int is just telling u the original value
Answer:
see explanation
Step-by-step explanation:
Given f(x) then f(x) + c is a vertical translation of f(x)
• If c > 0 then a shift up of c units
• If c < 0 then a shift down of c units
The graph of g(x) is the graph of f(x) shifted up by 4 units
Answer:
The answers should be C, then B, and then D
Step-by-step explanation:
Answer: The numbers are 4 and 6.
Step-by-step explanation:
Let one number be represented as
x
and the other as
y
.
According to the problem:
x
=
2
3
y
and
x
+
y
=
10
From the second equation we get:
x
+
y
=
10
∴
y
=
10
−
x
(subtracting
x
from both sides)
Replacing the value of
y
in the first equation we get:
x
=
2
3
y
x
=
2
3
(
10
−
x
)
Multiplying both sides by
3
we get:
3
x
=
2
(
10
−
x
)
Opening the brackets and simplifying we get:
3
x
=
20
−
2
x
Add
2
x
to both sides.
5
x
=
20
Divide both sides by
5
.
x
=
4
Since from the second equation we have:
x
+
y
=
10
substituting
x
with
4
we get:
4
+
y
=
10
Subtract
4
from both sides.
y
=
6