Answer:
x + 5y = 20
Explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m =
with (x₁, y₁ ) = (- 5, 5) and (x₂, y₂ ) = (5, 3) ← 2 points on the line
m =
=
=
= -
the line crosses the y- axis at (0, 4 ) ⇒ c = 4
y = -
x + 4 ← equation in slope- intercept form
the equation of a line in standard form is
Ax + By = C ( A is a positive integer and A, B are integers
y = -
x + 4 ( multiply through by 5 to clear the fraction )
5y = - x + 20 ( add x to both sides )
x + 5y = 20 ← equation in standard form