Q. A line has a slope of 5 and includes the points (−5,2) and (−6,r). What is the value of r?r = ____
Understand slope concept: Understand the concept of slope. The slope of a line is the ratio of the change in the y-coordinate to the change in the x-coordinate between any two points on the line. It is often represented as m in the slope formula m=x2−x1y2−y1.
Apply slope formula: Apply the slope formula to the given points and slope.We know the slope m is 5, one point is (−5,2), and the other point is (−6,r). We can plug these values into the slope formula:5=−6−(−5)r−2
Simplify denominator: Simplify the denominator of the fraction.−6−(−5) simplifies to −6+5, which equals −1.So, the equation becomes:5=−1r−2
Solve for r: Solve for r.To find r, we multiply both sides of the equation by −1:5×−1=(r−2)−5=r−2
Isolate r: Isolate r by adding 2 to both sides of the equation.−5+2=rr=−3
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