Concept explainers
(a)
Graph the equation by using x and y − intercept.
(a)
Answer to Problem 12CYU
x and y intercepts are x= 12 and y = 6
Explanation of Solution
Given:
The equation:
Concept Used:
The x -intercepts are where the graph crosses the x -axis, and the y -intercepts are where the graph crosses the y -axis.
Then, algebraically,
- an x -intercept is a point on the graph where y is zero, and
- a y -intercept is a point on the graph where x is zero.
More specifically,
- an x -intercept is a point in the equation where the y -value is zero, and
- a y -intercept is a point in the equation where the x -value is zero.
Calculation:
The equation:
Find the x − intercept, plug in y = 0 in the equation.
Find the y − intercept, plug in x = 0 in the equation
Graph the line
Thus,x and y intercepts are x = 12 and y =6
(b)
Describe what these x and y intercept value mean.
(b)
Answer to Problem 12CYU
x − Intercept is 12. This means the number of children is 12.
y − Intercept is 10. This means the number of adult is 10.
Explanation of Solution
Given:
The equation:
Concept Used:
x − Intercept is 12 and y − intercept is 10.
x − Intercept is 12. This means the number of children is 12.
y − Intercept is 10. This means the number of adult is 10.
Thus, x − Intercept is 12. This means the number of children is 12 and y − Intercept is 10. This means the number of adult is 10.
Chapter 3 Solutions
Algebra 1
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