Q. Line j has an equation of y−8=−32(x+5). Line k is perpendicular to line j and passes through (−6,−2). What is the equation of line k ?
Convert to Slope-Intercept Form: Convert the equation of line j to slope-intercept form to find its slope.The equation of line j is given as y−8=−32(x+5).To convert it to slope-intercept form y=mx+b, we need to isolate y on one side of the equation.y−8=−32(x+5)y=−32(x+5)+8y=−32x−32(5)+8y=−32x−310+324y=−32x+314The slope (m) of line j is −32.
Determine Perpendicular Slope: Determine the slope of line k, which is perpendicular to line j. Since line k is perpendicular to line j, its slope will be the negative reciprocal of the slope of line j. The slope of line j is −32, so the negative reciprocal is 23. Therefore, the slope (m) of line k is 23.
Use Point-Slope Form: Use the point-slope form to find the equation of line k.Line k passes through the point (−6,−2) and has a slope of 23.The point-slope form of a line is y−y1=m(x−x1), where m is the slope and (x1,y1) is a point on the line.Plugging in the slope and the point (−6,−2), we get:y−(−2)=23(x−(−6))y+2=23(x+6)
Simplify to Slope-Intercept Form: Simplify the equation of line k to slope-intercept form.y+2=(23)(x+6)y+2=(23)x+(23)(6)y+2=(23)x+9Subtract 2 from both sides to isolate y:y=(23)x+9−2y=(23)x+7The equation of line k in slope-intercept form is y=(23)x+7.
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