Solve x^2-8x-9=0 algebrically
1 answer:
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Answer:
y = x + 1
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 = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (- 4, 0) and (x₂, y₂ ) = (0, 1)
m = =
Note the line crosses the y- axis at (0, 1) ⇒ c = 1
y = x + 1 ← equation of line