Q. What is the equation of the line that passes through the point (3,−5) and has a slope of −1 ?Answer:
Identify slope and point: Identify the slope and the point through which the line passes.We are given the slope m as −1 and the point (x1,y1) as (3,−5).
Use point-slope form: Use the point-slope form of the equation of a line to plug in the known values.The point-slope form is given by (y−y1)=m(x−x1), where m is the slope and (x1,y1) is the point the line passes through.
Substitute values: Substitute the given slope and point into the point-slope form equation.(y−(−5))=−1(x−3)
Simplify equation: Simplify the equation by distributing the slope and moving terms around to get the slope-intercept form, y=mx+b.y+5=−1(x−3)y+5=−x+3
Isolate y: Isolate y to get the equation in slope-intercept form.y=−x+3−5y=−x−2
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