Expand (x-2)^2 in polynomial form
1 answer:
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Answer:
y = - 2x - 4
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 )
To calculate m use the gradient formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (- 2, 0) and (x₂, y₂ ) = (0, - 4) ← 2 points on the line
m = =
= - 2
not the line crosses the y-axis at (0, - 4) ⇒ c = - 4
y = - 2x - 4 ← equation of line
Answer:
Your answer is D
Step-by-step explanation:
Punching in those equations into my calculator, A, B, and C have all come up as non rational, because isn't a rational number. It can become rational as soon as you multiply it with another number.