The equation of line k is y+10=3(x+3). Perpendicular to line k is line ℓ, which passes through the point (5,−5). What is the equation of line ℓ ?Write the equation in slope-intercept form. Write the numbers in the equation as simplified proper fractions, improper fractions, or integers.
Q. The equation of line k is y+10=3(x+3). Perpendicular to line k is line ℓ, which passes through the point (5,−5). What is the equation of line ℓ ?Write the equation in slope-intercept form. Write the numbers in the equation as simplified proper fractions, improper fractions, or integers.
Determine Slope of Line k: Determine the slope of line k.The equation of line k is given in point-slope form: y+10=3(x+3).To find the slope, we need to rewrite it in slope-intercept form (y=mx+b), where m is the slope.y+10=3x+9Subtract 10 from both sides to isolate y.y=3x+9−10y=3x−1The slope of line k is 3.
Find Slope of Line ℓ: Find the slope of line ℓ, which is perpendicular to line k. Slopes of perpendicular lines are opposite reciprocals. The slope of line k is 3, so the slope of line ℓ will be the negative reciprocal of 3. The negative reciprocal of 3 is −31. Therefore, the slope of line ℓ is −31.
Use Point and Slope to Find Equation: Use the point (5,−5) and the slope −31 to find the equation of line ℓ. We will use the point-slope form of the equation, which is y−y1=m(x−x1), where (x1,y1) is a point on the line and m is the slope. Plugging in the point (5,−5) and the slope −31, we get: y−(−5)=−31(x−5)y+5=−31x+35
Solve for y in Slope-Intercept Form: Solve for y to put the equation in slope-intercept form.Subtract 5 from both sides to isolate y.y=−31x+35−5To combine the terms, we need a common denominator, which is 3.y=−31x+35−315y=−31x−310Now we have the equation of line ℓ in slope-intercept form.
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