1.
For a nonvertical line through the point at (
x
1
,
y
1
) with slope
m
, the point-slope form of a linear equation is ______.
A.
y
-
y
1
=
m
- (
x
-
x
1
)
B.
y
-
x
1
=
m
(
x
-
y
1
)
C.
y
-
y
1
=
m
(
x
-
x
1
)
D.
x
-
x
1
=
m
(
y
-
y
1
)
Hint
2.
Which information is enough to write a linear equation in point-slope form?
A.
the
y
-coordinates of two points on the line
B.
the slope of the line
C.
the
x
-coordinates of two points on the line
D.
the
x
- and
y
-coordinates of two points on the line
Hint
3.
A line passes through the origin of a coordinate system. The slope of the line is 0. What is the equation of this line?
A.
x
= 0
B.
y
=
x
C.
y
= 0
D.
y
= –
x
Hint
4.
Consider the graph below. In 1990, the population of Iowa Falls, Iowa, was 5435. In 1998, the population was 5137. An equation in point–slope form for the population of Iowa Falls, as shown in the graph, is______.
A.
B.
C.
D.
Hint
5.
Write the point–slope form of an equation for the line passing through
(2, 3) with slope 2.
A.
y
– 3 = 2(
x
– 2)
B.
y
+ 3 = 2(
x
+ 2)
C.
y
+ 2 = 2(
x
+ 3)
D.
y
+ 2 = 2(
x
+ 3)
Hint