Respuesta :

Answer:

y = - 0.5x + 4

Step-by-step explanation:

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (4, 2) ← 2 points on the line

m = [tex]\frac{2-4}{4-0}[/tex] = [tex]\frac{-2}{4}[/tex] = - 0.5

Note the line crosses the y- axis at (0, 4) ⇒ c = 4

y = - 0.5x + 4 ← equation of boundary line

Answer:

y = -0.5 x + 4.

Step-by-step explanation:

Slope-intercept form of the equation of a line on a Cartesian Plane:

[tex]y = mx + b[/tex].

[tex]m[/tex] is the slope of the line.

If two different points [tex](x_1, y_1)[/tex] and [tex](x_2, y_2)[/tex] on the line are given, the slope of the line will equal

[tex]\displaystyle m = \frac{y_2 - y_1}{x_2 - x_1}[/tex].

For this line, the two points are:

  • [tex](4,2)[/tex], and
  • [tex](0, 4)[/tex].

As a result,

[tex]\displaystyle m = \frac{2 - 4}{4 - 0} = - \frac{1}{2}[/tex].

[tex]b[/tex] is the [tex]y[/tex]-coordinate (the second coordinate) of the point at the intersection of the line and the [tex]y[/tex]-axis (the vertical axis.) The [tex]x[/tex]-coordinate (the first coordinate) of that point shall equals [tex]0[/tex]. For this line, the coordinates of the intersection is [tex](0, 4)[/tex]. As a result, [tex]b = 4[/tex].

The slope-intercept form of the equation of this line will thus be

[tex]\displaystyle y = -\frac{1}{2}x + 4[/tex].