Answered

Nolan plots the [tex]y[/tex]-intercept of a line at [tex]\((0, 3)\)[/tex] on the [tex]y[/tex]-axis. He uses a slope of 2 to graph another point. He draws a line through the two points. Which equation represents Nolan's line?

A. [tex]y = 2x + 1[/tex]
B. [tex]y = 2x + 3[/tex]
C. [tex]y = 3x + 2[/tex]
D. [tex]y = 3x + 5[/tex]



Answer :

Sure, let’s work through the problem step-by-step to find the equation that represents Nolan’s line.

1. Identify the y-intercept:
- Nolan plots the [tex]$y$[/tex]-intercept at [tex]$(0,3)$[/tex]. The y-intercept is the point where the line crosses the y-axis, and this gives us the constant term, [tex]$b$[/tex], in the equation of the line.

2. Determine the slope:
- The slope given is [tex]$2$[/tex]. The slope represents the steepness of the line and is denoted as [tex]$m$[/tex] in the equation of the line.

3. Form the equation of the line:
- The general form of the equation of a line is [tex]$y = mx + b$[/tex], where [tex]$m$[/tex] is the slope and [tex]$b$[/tex] is the y-intercept.

4. Substitute the slope and y-intercept into the equation:
- Here, [tex]$m = 2$[/tex] and [tex]$b = 3$[/tex]. Substituting these values in, we get:
[tex]\[ y = 2x + 3 \][/tex]

5. Verify the result:
- We have successfully formed the equation of the line using the provided slope and y-intercept.

Thus, the equation that represents Nolan's line is:
[tex]\[ y = 2x + 3 \][/tex]

Among the given options, the correct choice is:
[tex]\[ \boxed{y = 2x + 3} \][/tex]