Select the correct answer.

This week, Theo walked [tex]x[/tex] hours at a constant rate of 4 miles per hour and jogged [tex]y[/tex] hours at a constant rate of 6 miles per hour. The total distance he walked and jogged this week was 36 miles. The relationship is modeled by this equation:
[tex]
4x + 6y = 36
[/tex]

Which statement is true about the graph of this relationship?
A. The graph is a line that goes through the points [tex](9,0)[/tex] and [tex](0,6)[/tex].
B. The graph is a line that goes through the points [tex](6,0)[/tex] and [tex](0,9)[/tex].
C. The graph is a line that goes through the points [tex](-9,0)[/tex] and [tex](0,6)[/tex].
D. The graph is a line that goes through the points [tex](-6,0)[/tex] and [tex](0,9)[/tex].



Answer :

To understand the graph of the given relationship [tex]\( 4x + 6y = 36 \)[/tex], we need to find the intercepts where the line crosses the x-axis and the y-axis.

### Finding the Intercepts:

1. x-intercept (where the line crosses the x-axis):
- Set [tex]\( y = 0 \)[/tex] in the equation [tex]\( 4x + 6y = 36 \)[/tex].
- The equation becomes [tex]\( 4x = 36 \)[/tex].
- Solving for [tex]\( x \)[/tex], we get:
[tex]\[ x = \frac{36}{4} = 9 \][/tex]
- So the x-intercept is [tex]\( (9, 0) \)[/tex].

2. y-intercept (where the line crosses the y-axis):
- Set [tex]\( x = 0 \)[/tex] in the equation [tex]\( 4x + 6y = 36 \)[/tex].
- The equation becomes [tex]\( 6y = 36 \)[/tex].
- Solving for [tex]\( y \)[/tex], we get:
[tex]\[ y = \frac{36}{6} = 6 \][/tex]
- So the y-intercept is [tex]\( (0, 6) \)[/tex].

### Conclusion:

The line represented by the equation [tex]\( 4x + 6y = 36 \)[/tex] passes through the points [tex]\( (9, 0) \)[/tex] and [tex]\( (0, 6) \)[/tex].

Given the above intercepts, we can now match this with the provided options:

- A. The graph is a line that goes through the points [tex]\( (9, 0) \)[/tex] and [tex]\( (0, 6) \)[/tex].

Thus, the correct answer is:
A. The graph is a line that goes through the points [tex]\( (9, 0) \)[/tex] and [tex]\( (0, 6) \)[/tex].