Answer:
<u>slope:</u> -5/2
<u>y-intercept</u>: (0, 2)
<u>Linear function</u>: y = -5/2x + 2
Step-by-step explanation:
Given points (-2, 7) and (2, -3):
Use these points to solve for the slope of the line using the formula:
m = (y2 - y1)/(x2 - x1)
Let (x1, y1) = (-2, 7)
(x2, y2) = (2, -3)
Substitute these values into the equation:
m = (y2 - y1)/(x2 - x1)
m = (-3 - 7) / [2 - (-2)]
m = -10/ (2 + 2)
m = -10/4 = -5/2
Therefore, the slope of the line in reduced form is m = -5/2.
The y-intercept is the <u>y-coordinate</u> of the point (0, <em>b</em>) where the graph of the linear equation crosses the y-axis of the Cartesian grid. The y-intercept is also the value of y when x = 0.
To solve for the y-intercept, use one of the given points (2, -3) and the slope (m = -5/2), and substitute their values into the slope-intercept form:
y = mx + b
-3 = -5/2(2) + b
-3 = -5 + b
Add 5 to both sides to solve for the y-intercept, b:
-3 + 5 = -5 + 5 + b
2 = b
Given the value of b = 2, it means that the y-intercept is (0, 2).
Therefore, given the slope of -5/2, and the y-intercept, b = 2:
The linear equation in slope-intercept form is: y = -5/2x + 2
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