Q. A line with a slope of 8 passes through the points (−3,5) and (−4,k). What is the value of k?k = ____
Given Information: We are given the slope of the line and one point on the line. We can use the slope formula to find the value of k. The slope formula is (y2−y1)/(x2−x1)= slope, where (x1,y1) and (x2,y2) are points on the line.
Slope Formula: Let's plug in the values we know into the slope formula. We have the slope 8, one point (−3,5), and the x-coordinate of the second point (−4). We are looking for the y-coordinate of the second point, which is k. So, we have −4−(−3)k−5=8.
Plug in Values: Simplify the denominator of the slope formula. We have −4−(−3) which simplifies to −4+3, which equals −1. So, our equation now looks like (k−5)/−1=8.
Simplify Denominator: Now, we solve for k. Multiply both sides of the equation by −1 to get k−5=−8.
Solve for k: Finally, add 5 to both sides of the equation to isolate k. We get k=−8+5, which simplifies to k=−3.
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