Practice Makes Perfect
Recognize the Relationship Between the Solutions of an Equation and its Graph
In the following exercises, for each ordered pair, decide:
- Is the ordered pair a solution to the equation?
- Is the point on the line?
Exercise \(\PageIndex{1}\)
y=x+2
- (0,2)
- (1,2)
- (−1,1)
- (−3,−1)

- Answer
-
- yes; no
- no; no
- yes; yes
- yes; yes
Exercise \(\PageIndex{2}\)
y=x−4
- (0,−4)
- (3,−1)
- (2,2)
- (1,−5)
-

Exercise \(\PageIndex{3}\)
\(y=\frac{1}{2} x-3\)
- (0,−3)
- (2,−2)
- (−2,−4)
- (4,1)

- Answer
-
- yes; yes
- yes; yes
- yes; yes
- no; no
Exercise \(\PageIndex{4}\)
\(y=\frac{1}{3} x+2\)
- (0,2)
- (3,3)
- (−3,2)
- (−6,0)

Graph a Linear Equation by Plotting Points
In the following exercises, graph by plotting points.
Exercise \(\PageIndex{5}\)
\(y=3 x-1\)
- Answer
-

Exercise \(\PageIndex{6}\)
\(y=2 x+3\)
Exercise \(\PageIndex{7}\)
\(y=-2 x+2\)
- Answer
-

Exercise \(\PageIndex{8}\)
\(y=-3 x+1\)
Exercise \(\PageIndex{9}\)
\(y=x+2\)
- Answer
-

Exercise \(\PageIndex{10}\)
\(y=x-3\)
Exercise \(\PageIndex{11}\)
\(y=-x-3\)
- Answer
-

Exercise \(\PageIndex{12}\)
\(y=-x-2\)
Exercise \(\PageIndex{13}\)
\(y=2 x\)
- Answer
-

Exercise \(\PageIndex{14}\)
\(y=3 x\)
Exercise \(\PageIndex{15}\)
\(y=-4 x\)
- Answer
-

Exercise \(\PageIndex{16}\)
\(y=-2 x\)
Exercise \(\PageIndex{17}\)
\(y=\frac{1}{2} x+2\)
- Answer
-

Exercise \(\PageIndex{18}\)
\(y=\frac{1}{3} x-1\)
Exercise \(\PageIndex{19}\)
\(y=\frac{4}{3} x-5\)
- Answer
-

Exercise \(\PageIndex{20}\)
\(y=\frac{3}{2} x-3\)
Exercise \(\PageIndex{21}\)
\(y=-\frac{2}{5} x+1\)
- Answer
-

Exercise \(\PageIndex{22}\)
\(y=-\frac{4}{5} x-1\)
Exercise \(\PageIndex{23}\)
\(y=-\frac{3}{2} x+2\)
- Answer
-

Exercise \(\PageIndex{24}\)
\(y=-\frac{5}{3} x+4\)
Exercise \(\PageIndex{25}\)
\(x+y=6\)
- Answer
-

Exercise \(\PageIndex{26}\)
\(x+y=4\)
Exercise \(\PageIndex{27}\)
\(x+y=-3\)
- Answer
-

Exercise \(\PageIndex{28}\)
\(x+y=-2\)
Exercise \(\PageIndex{29}\)
\(x-y=2\)
- Answer
-

Exercise \(\PageIndex{30}\)
\(x-y=1\)
Exercise \(\PageIndex{31}\)
\(x-y=-1\)
- Answer
-

Exercise \(\PageIndex{32}\)
\(x-y=-3\)
Exercise \(\PageIndex{33}\)
\(3 x+y=7\)
- Answer
-

Exercise \(\PageIndex{34}\)
\(5x+y=6\)
Exercise \(\PageIndex{35}\)
2x+y=−3
- Answer
-

Exercise \(\PageIndex{36}\)
\(4x+y=−5\)
Exercise \(\PageIndex{37}\)
\(\frac{1}{3} x+y=2\)
- Answer
-

Exercise \(\PageIndex{38}\)
\(\frac{1}{2} x+y=3\)
Exercise \(\PageIndex{39}\)
\(\frac{2}{5} x-y=4\)
- Answer
-

Exercise \(\PageIndex{40}\)
\(\frac{3}{4} x-y=6\)
Exercise \(\PageIndex{41}\)
\(2 x+3 y=12\)
- Answer
-

Exercise \(\PageIndex{42}\)
4x+2y=12
Exercise \(\PageIndex{43}\)
3x−4y=12
- Answer
-

Exercise \(\PageIndex{44}\)
2x−5y=10
Exercise \(\PageIndex{45}\)
x−6y=3
- Answer
-

Exercise \(\PageIndex{46}\)
x−4y=2
Exercise \(\PageIndex{47}\)
5x+2y=4
- Answer
-

Exercise \(\PageIndex{48}\)
3x+5y=5
Graph Vertical and Horizontal Lines
In the following exercises, graph each equation.
Exercise \(\PageIndex{49}\)
x=4
- Answer
-

Exercise \(\PageIndex{50}\)
x=3
Exercise \(\PageIndex{51}\)
x=−2
- Answer
-

Exercise \(\PageIndex{52}\)
x=−5
Exercise \(\PageIndex{53}\)
y=3
- Answer
-

Exercise \(\PageIndex{54}\)
y=1
Exercise \(\PageIndex{55}\)
y=−5
- Answer
-

Exercise \(\PageIndex{56}\)
y=−2
Exercise \(\PageIndex{57}\)
\(x=\frac{7}{3}\)
- Answer
-

Exercise \(\PageIndex{58}\)
\(x=\frac{5}{4}\)
Exercise \(\PageIndex{59}\)
\(y=-\frac{15}{4}\)
- Answer
-

Exercise \(\PageIndex{60}\)
\(y=-\frac{5}{3}\)
In the following exercises, graph each pair of equations in the same rectangular coordinate system.
Exercise \(\PageIndex{61}\)
y=2x and y=2
- Answer
-

Exercise \(\PageIndex{62}\)
y=5x and y=5
Exercise \(\PageIndex{63}\)
\(y=-\frac{1}{2} x\) and \(y=-\frac{1}{2}\)
- Answer
-

Exercise \(\PageIndex{64}\)
\(y=-\frac{1}{3} x\) and \(y=-\frac{1}{3}\)
Self Check
ⓐ After completing the exercises, use this checklist to evaluate your mastery of the objectives of this section.
ⓑ After reviewing this checklist, what will you do to become confident for all goals?