Answer:
y = [tex]\frac{2}{3}[/tex] x + [tex]\frac{31}{3}[/tex]
Step-by-step 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 = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 8, 5) and (x₂, y₂ ) = (- 2, 9)
m = [tex]\frac{9-5}{-2+8}[/tex] = [tex]\frac{4}{6}[/tex] = [tex]\frac{2}{3}[/tex] , thus
y = [tex]\frac{2}{3}[/tex] x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (- 2, 9 ), then
9 = - [tex]\frac{4}{3}[/tex] + c ⇒ c = 9 + [tex]\frac{4}{3}[/tex] = [tex]\frac{31}{3}[/tex]
y = [tex]\frac{2}{3}[/tex] x + [tex]\frac{31}{3}[/tex] ← equation of line
