Answer:
The correct answer is A {x/ all real numbers}; {y/ y> 0}
Step-by-step explanation:
Answer:
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Answer:
x = ± 2
Step-by-step explanation:
Given
x² = 20 ( take the square root of both sides )
x = ± = ± = ± 2
I think you mean,
You can use the usual formula,
That in this case is,
Where I have used,
Answer:
y = 2x - 2
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 =
with (x₁, y₁ ) = (0, - 2) and (x₂, y₂ ) = (2, 2)
m = = = 2
The line crosses the y- axis at (0, - 2) ⇒ c = - 2
y = 2x - 2 ← equation of line