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Substitute 0 for y.
Write original equation.
To find the x-intercept, substitute 0 for y and solve for x.
SOLUTION
Find the x-intercept and the y-intercept of the graph of 2x + 7y = 28.
Find the intercepts of the graph of an equationEXAMPLE 1
Solve for x.
2x + 7(0) = 28
x = = 14282
2x + 7y = 28
2(0) + 7y = 28
Find the intercepts of the graph of an equation
EXAMPLE 1
To find the y-intercept, substitute 0 for x and solve for y.
Write original equation.
Substitute 0 for x.
Solve for y.
ANSWER
The x-intercept is 14. The y-intercept is 4.
2x +7y = 28
y = 287 = 4
Substitute 0 for y.
Write original equation.
To find the x-intercept, substitute 0 for y and solve for x.
SOLUTION
Find the x-intercept and the y-intercept of the graph of the equation.
Solve for x.
3x + 2(0) = 6
x = 2
3x + 2y = 6
GUIDED PRACTICE for Example 1
1. 3x + 2y = 6
3(0) + 2y = 6
Find the intercepts of the graph of an equation
EXAMPLE 1
To find the y-intercept, substitute 0 for x and solve for y.
Write original equation.
Substitute 0 for x.
Solve for y.
ANSWER
The x-intercept is 2. The y-intercept is 3.
3x +2y = 6
y =3
GUIDED PRACTICE for Example 1
Substitute 0 for y.
Write original equation.
To find the x-intercept, substitute 0 for y and solve for x.
SOLUTION
Find the x-intercept and the y-intercept of the graph of the equation.
Solve for x.
4x – 2(0) = 10
4x – 2y = 10
GUIDED PRACTICE for Example 1
2. 4x – 2y = 10
104x = x= 2.5
4(0) – 2y = 10
Find the intercepts of the graph of an equation
EXAMPLE 1
To find the y-intercept, substitute 0 for x and solve for y.
Write original equation.
Substitute 0 for x.
Solve for y.
ANSWER
The x-intercept is 2.5. The y-intercept is –5.
4x – 2y =10
y = – = –5102
GUIDED PRACTICE for Example 1
Substitute 0 for y.
Write original equation.
To find the x-intercept, substitute 0 for y and solve for x.
SOLUTION
Find the x-intercept and the y-intercept of the graph of the equation.
Solve for x.
–3x + 5(0) = –15
–3x + 5y = –15
GUIDED PRACTICE for Example 1
3. – 3x + 5y = – 15
153x = = 5
–3(0) + 5y = –15
Find the intercepts of the graph of an equation
EXAMPLE 1
To find the y-intercept, substitute 0 for x and solve for
y.
Write original equation.
Substitute 0 for x.
Solve for y.
ANSWER
The x-intercept is 5. The y-intercept is –3.
–3x + 5y = –15
y = – = –3155
GUIDED PRACTICE for Example 1
