QUESTION IMAGE
Question
find the distance between the two points in simplest radical form.
Response
- First, assume the two - point formula:
- The distance formula between two points \((x_1,y_1)\) and \((x_2,y_2)\) is \(d = \sqrt{(x_2 - x_1)^2+(y_2 - y_1)^2}\). Since the points are not given explicitly in the text, let's assume the two points are \((x_1,y_1)\) and \((x_2,y_2)\).
- However, if we assume one point is \((0,5)\) (from the \(y\) - axis at \(y = 5\)) and the other point is \((- 5,-7)\) (estimated from the grid), then:
- Here \(x_1=0,y_1 = 5,x_2=-5,y_2=-7\).
- Then, calculate the differences:
- Calculate \(x_2 - x_1\) and \(y_2 - y_1\):
- \(x_2 - x_1=-5 - 0=-5\).
- \(y_2 - y_1=-7 - 5=-12\).
- Next, apply the distance formula:
- Substitute into the distance formula \(d=\sqrt{(x_2 - x_1)^2+(y_2 - y_1)^2}\).
- \(d=\sqrt{(-5)^2+(-12)^2}=\sqrt{25 + 144}\).
- \(d=\sqrt{169}\).
- \(d = 13\) (but we need it in radical form, and \(\sqrt{169}=13\) can also be written as \(\sqrt{13\times13}\)). In simplest radical form, \(d = 13\) (since \(\sqrt{169}\) is already in a simple form considering we are looking for the square - root result). If we assume other points, say \((x_1,y_1)\) and \((x_2,y_2)\):
- \(d=\sqrt{(x_2 - x_1)^2+(y_2 - y_1)^2}\). Let's start over with general steps.
- Let the two points be \((x_1,y_1)\) and \((x_2,y_2)\).
- First, find the difference in \(x\) - coordinates: \(\Delta x=x_2 - x_1\) and the difference in \(y\) - coordinates: \(\Delta y=y_2 - y_1\).
- Then \(d=\sqrt{(\Delta x)^2+(\Delta y)^2}\).
- Suppose the two points are \((0,5)\) and \((-5,-7)\):
- \(\Delta x=-5-0=-5\), \(\Delta y=-7 - 5=-12\).
- \(d=\sqrt{(-5)^2+(-12)^2}=\sqrt{25+144}=\sqrt{169}=13=\sqrt{13^2}\).
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\(\sqrt{169}\) (or \(13\) written as a square - root \(\sqrt{13^2}\), and the simplest radical form of \(\sqrt{169}\) is \(13\) but if we must keep it in radical form \(\sqrt{169}\) is correct as \(169 = 13\times13\))