Q. The points (7,k) and (9,3) fall on a line with a slope of 4. What is the value of k?k=___
Set up slope equation: Use the slope formula to set up the equation. Slope = x2−x1y2−y1. Here, slope = 4, (x1,y1)=(7,k), and (x2,y2)=(9,3).4=9−73−k
Simplify and solve for k: Simplify the denominator and solve for k.4=23−kMultiply both sides by 2 to eliminate the fraction.4×2=2(3−k)×28=3−k
Rearrange to find k: Rearrange the equation to solve for k.8=3−k8−3=−k5=−kk=−5
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