Q. A line has a slope of 6 and includes the points (7,6) and (5,u). What is the value of u?u=___
Definition 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. The formula for the slope (m) between two points (x1,y1) and (x2,y2) is m=x2−x1y2−y1.
Given Information: We are given the slope of the line m=6, one point on the line (7,6), and the x-coordinate of another point on the line (5). We need to find the y-coordinate of this second point, which we are calling u.
Slope Formula Setup: Using the slope formula with our known point (7,6) and our unknown point (5,u), we set up the equation 6=(5−7)(u−6).
Eliminating Denominator: Solving for u, we multiply both sides of the equation by (5−7), which is −2, to get rid of the denominator. This gives us 6×−2=u−6.
Calculating Left Side: Now we calculate the left side of the equation: 6×−2=−12. So, −12=u−6.
Solving for u: To solve for u, we add 6 to both sides of the equation: −12+6=u−6+6.
Final Result: This simplifies to −6=u. So, the value of u is −6.
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