Q. A line has a slope of 9 and includes the points (−2,t) and (−1,2). What is the value of t?t = ____
Use Slope Formula: To find the value of t, we can use the slope formula, which is (change in y)/(change in x)=slope. Here, we have two points (−2,t) and (−1,2), and the slope is given as 9.
Calculate Change in y and x: The change in y is (t−2), and the change in x is (−2−(−1)) or (−2+1), which simplifies to −1. So, the slope formula with our values is −1t−2=9.
Apply Slope Formula: To find t, we multiply both sides of the equation by −1 to get rid of the denominator. This gives us t−2=−9.
Solve for t: Now, we add 2 to both sides of the equation to solve for t. This gives us t=−9+2.
Final Calculation: Calculating t=−9+2 gives us t=−7.
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