The problem asks us to find the slope and y-intercept of the line shown in the graph and then write the equation of the line.

AlgebraLinear EquationsSlopeY-interceptGraphing
2025/3/6

1. Problem Description

The problem asks us to find the slope and y-intercept of the line shown in the graph and then write the equation of the line.

2. Solution Steps

First, let's identify two points on the line from the graph. From the graph, we can see the line passes through the points (0,4)(0, 4) and (2,7)(2, 7).
The slope mm of the line passing through points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is given by:
m=y2y1x2x1m = \frac{y_2 - y_1}{x_2 - x_1}
Using the points (0,4)(0, 4) and (2,7)(2, 7), we have:
m=7420=32m = \frac{7 - 4}{2 - 0} = \frac{3}{2}
The y-intercept is the point where the line crosses the y-axis, which is the y-coordinate when x=0x = 0. From the graph, we can directly read the y-intercept as 44. Therefore, b=4b = 4.
The slope-intercept form of a linear equation is:
y=mx+by = mx + b
where mm is the slope and bb is the y-intercept.
Substituting the values of mm and bb, we get:
y=32x+4y = \frac{3}{2}x + 4
The question asks for the slope only.

3. Final Answer

32\frac{3}{2}