Answer: try to do the equation from this example
Step-by-step explanation: The point-slope equation is used when one point and the slope are known. It is:
y
−
y
1
=
m
(
x
−
x
1
)
,x-
where
(
x
1
,
y
1
)
is the known point, in this case,
(
2
,
5
)
, and
m
is the slope, in this case
m
=
3
.
Substitute the known values into the equation.
y
−
5
=
3
(
x
−
2
)
⇐
point-slope form
This equation can be further simplified.
y
−
5
=
3
x
−
6
Add
5
to both sides.
y
=
3
x
−
6
+
5
Simplify.
y
=
3
x
−
1
⇐
slope-Intercept form:
y
=
m
x
+
b
, where
m
is the slope, and
b
is the y-Intercept.
graph{y-5=3(x-2) [-18.79, 8.62, -7.36, 6.35]}
Answer:
Option B, y intercept of -4
Step-by-step explanation:
Option A is incorrect because you cannot use the slope because you don't know where or what point to start from.
<em>Option B is correct because the first thing you do is plot the y intercept of -4 and then you find the slope of the line.</em>
<em />
Option C is incorrect because you cannot use the slope because you don't know where or what point to start from.
Option D is incorrect because that is the wrong y intercept.
Answer: Option B, y intercept of -4
We want to get b alone so I would start by multiplying 2 to get it on the other side of the = sign. So then I have 2L=a-b. I would subtract a on both sides and then I would have 2L-a= -b. We don't want a -b so I would multiply everything by -1 so then the answer would then be a positive b= -2L+a
