Answer: 
Step-by-step explanation:
Given: Emelina wrote the equation of a line in point-slope form as shown below.
To write the equation in intercept form, first we multiply 3 inside the bracket values in the right side , we get
Now, subtract 4 from both sides , we get
Hence, Emelina’s equation in slope-intercept form :
Group 'em together
a
b
−
a
+
1
−
b
a
b
−
a
=
a
(
b
−
1
)
Notice that there will be a 1 as without it it'll simply be ab
1
−
b
=
1
(
1
−
b
)
Notice that it doesn't match with the upper one... so we'll change the signs
1
(
1
−
b
)
=
−
1
(
b−
1
)
(try to multiply them now!!
Jot them down in one expression
a
(
b
−
1
)
−
1
(
b
−
1
)
You get!!!!!!
(
a
−
1
)
(
b
−
1
)
When one number is negative and the other is positive.
