Line v has an equation of y=−2x+5. Perpendicular to line v is line w, which passes through the point (6,−5). What is the equation of line w? Write the equation in slope-intercept form.
Q. Line v has an equation of y=−2x+5. Perpendicular to line v is line w, which passes through the point (6,−5). What is the equation of line w? Write the equation in slope-intercept form.
Determine slope of line v: Determine the slope of line v. The equation of line v is given as y=−2x+5. The slope-intercept form of a line is y=mx+b, where m is the slope and b is the y-intercept. Comparing the given equation with the slope-intercept form, we find that the slope (m) of line v is −2.
Find slope of line w: Find the slope of line w. Since line w is perpendicular to line v, its slope will be the negative reciprocal of the slope of line v. The negative reciprocal of −2 is 21. Therefore, the slope (m) of line w is 21.
Use point-slope form: Use the point-slope form to find the equation of line w. We have the slope of line w (21) and a point through which it passes (6,−5). The point-slope form of a line's equation is y−y1=m(x−x1), where (x1,y1) is a point on the line and m is the slope. Plugging in the values, we get y−(−5)=21(x−6).
Simplify to slope-intercept form: Simplify the equation to slope-intercept form. Starting with y+5=21(x−6), we distribute the slope on the right side to get y+5=21x−3. Then, we subtract 5 from both sides to isolate y, resulting in y=21x−3−5. Simplifying further, we get y=21x−8.
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