Question

If a line falls on the points (18, 17) and (8,8), what is its slope? Enter your

answer as a fraction in lowest terms. Use a slash mark (/) as the fraction
bar.​

Answer 1

f(x)= 9/10x

Explanation:

17 -8 9

------- = ---

18-8 10

y= mx + b

That is the unit rate, but now we have to find (b) (where on the y axis the line goes through) and if you trace the line back you can clearly see that it goes through 0, which you do not need to write down, but you can if it gives you peace.

Answer 2

`\text{Find the slope}\\\\\text{Use the slope formula:}\\\\(y2-y1)/(x2-x1)\\\\\text{Plug in the coordinates and solve:}\\\\(8-17)/(8-18)\\\\(-9)/(-10)\\\\\text{Two negative cancel each other out to make a positive}\\\\\boxed{(9)/(10)\,\,or\,\,9/10}`