In rectangle ABCD, AC = x + 10 and diagonal BD = 2x - 30. Find the value of x.
1 answer:
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Step 1: Find the slope:
Step 2: Set up your equation using one of the points.
Using (5,6) we have .
Using (6,10) we have
Both of those equations would be correct.
Answer:
A
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 ) = (0, 3) and (x₂, y₂ ) = (1, 1)
m = = - 2
note the line crosses the y- axis at (0, 3) ⇒ c = 3
y = - 2x + 3 → A