Allan drew a polygon with 4 sides and 4 angles. All four sides are equal. None of the angles are right angles. What figure did A
2 answers:
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Answer:
Step-by-step explanation:
The general equation of a circle is as follows:
In which the center is , and r is the radius.
In this problem, we have that:
So
Passing through (2,-4)
We replace into the equation to find the radius.
The equation of the circle is:
Answer:
(C)4
Step-by-step explanation:
Given the line:
The gradient of the line,
A line perpendicular to the given line will have a gradient, (by definition of perpendicularity).
Therefore, a perpendicular line that passes through the point (4,1) is:
Comparing with the slope-intercept form y=mx+x, the slope of the perpendicular line, b=4.