Q. A line that includes the points (6,5) and (8,u) has a slope of −4. What is the value of u?u = ____
Understand the formula: Understand the formula for the slope of a line.The slope of a line is calculated by the difference in the y-coordinates divided by the difference in the x-coordinates between two points on the line. The formula is:slope (m) = (y2−y1)/(x2−x1)
Apply the formula: Apply the slope formula to the given points and slope.We are given the slope m as −4, and two points (6,5) and (8,u). Let's denote (6,5) as (x1,y1) and (8,u) as (x2,y2). According to the slope formula:−4=8−6u−5
Solve for u: Solve for u.Now we need to solve the equation for u:−4=2u−5Multiply both sides by 2 to isolate (u−5):−4×2=u−5−8=u−5Now, add 5 to both sides to solve for u:−8+5=u−3=u
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