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1. Given the equation,
4y = − 3x + 4
a) Rewrite the equation in slope-intercept form.
− 3 4
y = 1 OR (0, 1)
− 3 4
4 4 4
−3
4
Algebra I Concept Test # 7 – Graphing Lines Practice Test
Divide
m =
y = x + 1
b) Identify the slope.
c) Identify the y-intercept.
d) Graph: Note: Plot the y-intercept first, and then apply the slope.
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Slope – intercept form: y = mx + b
1 2
Note: To find the x-intercept, let y = 0.
Note: To find the y-intercept, let x = 0.
a) Find the x- and y-intercepts.
b) Graph:
c) Identify the slope.
2. Given the equation: x – 2y = 4 ,
x – intercept = (4, 0)
y – intercept = (0, – 2)
x – 2y = 4
2
4
x – 2y = 4
x - intercept y - intercept
x – 2(0) = 4x – 0 = 4
x = 4
0 – 2y = 4
– 2y = 4y = – 2
2 4
Algebra I Concept Test # 7 – Graphing Lines Practice Test
m = =
3.
a) On the coordinate plane provided, graph x = − 1
b) On the same coordinate plane, graph y = 4
c) Find the slope of x = − 1
d) Find the slope of y = 4
e) Identify the point of intersection
Undefined
0
(– 1, 4)
Algebra I Concept Test # 7 – Graphing Lines Practice Test
4. Using the following graph,
a) Find the y-coordinate when x = 0
y = − 3
x = 3
Algebra I Concept Test # 7 – Graphing Lines Practice Test
Notice: You are looking for the unknown coordinate of an ordered pair when a coordinate is given.
b) Find the x-coordinate when y = − 5
y = − 5
x = 0
5. Given the following graph:
a) Identify the slope
Algebra I Concept Test # 7 – Graphing Lines Practice Test
3 2
− 2 3
3 2
m =
m =
m =
b) Find the slope of a lineperpendicular to the given line.
c) Find the slope of a lineparallel to the given line.
6. Which of the following has a steeper slope:
Algebra I Concept Test # 7 – Graphing Lines Practice Test
y = x + 1 or13
y = x – 1
23
Note: The line with the steeper slope is the line that has the greater numerical slope value.
Notice, 2 3
1 3 >
y = x – 1 ,has the steeper slope. 23
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