Sovi.AI - AI Math Tutor

Scan to solve math questions

QUESTION IMAGE

analyze determine whether the following statement is sometimes, always,…

Question

analyze determine whether the following statement is sometimes, always, or never true. justify your argument. \xy is on a number line and point w is \\(\frac{2}{5}\\) of the distance from x to y, then the coordinate of point w is greater than the coordinate of point x select choice \\(\boldsymbol{\downarrow}\\), if the coordinate of x is 0 and the coordinate of y is negative, then the coordinate of w will be select choice \\(\boldsymbol{\downarrow}\\) and select choice \\(\boldsymbol{\downarrow}\\) the coordinate of x. if the coordinate of x is positive and the coordinate of y is greater than the coordinate of x, then the coordinate of w will be select choice \\(\boldsymbol{\downarrow}\\) than the coordinate of x.
need help?\

Explanation:

Step1: Define Variables and Distance

Let the coordinate of \( X \) be \( x \) and the coordinate of \( Y \) be \( y \). The distance between \( X \) and \( Y \) is \( |y - x| \). Point \( W \) is \( \frac{2}{5} \) of this distance from \( X \), so the coordinate of \( W \), \( w \), is \( x+\frac{2}{5}(y - x)=\frac{3}{5}x+\frac{2}{5}y \) (assuming \( W \) is between \( X \) and \( Y \); we'll check direction later).

Step2: Case 1 - \( x = 0 \), \( y<0 \)

Substitute \( x = 0 \) into \( w \): \( w=\frac{2}{5}y \). Since \( y<0 \), \( \frac{2}{5}y<0 \), and \( x = 0 \), so \( w

Step3: Case 2 - \( x>0 \), \( y>x \)

Substitute into \( w=\frac{3}{5}x+\frac{2}{5}y \). Let's compare \( w \) and \( x \): \( w - x=\frac{2}{5}(y - x) \). Since \( y>x \), \( y - x>0 \), so \( w - x>0 \), meaning \( w>x \). Thus, the coordinate of \( W \) is greater than that of \( X \).

Step4: Determine "Sometimes, Always, Never"

For the first part ( \( x = 0 \), \( y<0 \) ), \( W \) is never greater (always less). For the second part ( \( x>0 \), \( y>x \) ), \( W \) is always greater. But the original statement's first part: "if the coordinate of \( X \) is 0 and the coordinate of \( Y \) is negative, then the coordinate of \( W \) will be [greater/less] than \( X \)" – from Step2, it's less. The second part: "if the coordinate of \( X \) is positive and \( Y \) is greater than \( X \), then \( W \) will be [greater/less] than \( X \)" – from Step3, it's greater. But the initial question is about whether the statement "If \( \overline{XY} \) is on a number line and point \( W \) is \( \frac{2}{5} \) of the distance from \( X \) to \( Y \), then the coordinate of point \( W \) is greater than the coordinate of point \( X \)" is sometimes, always, or never true.

From Step2, when \( x = 0 \), \( y<0 \), \( w0 \), \( y>x \), \( w>x \). So it's sometimes true (true in some cases, false in others).

Answer:

The statement is sometimes true. For the first "Select Choice" (when \( X = 0 \), \( Y<0 \)): the coordinate of \( W \) is less than that of \( X \). For the second "Select Choice" (when \( X>0 \), \( Y>X \)): the coordinate of \( W \) is greater than that of \( X \).