Question

The points (-11, r) and (-6, 12) lie on a line with slope 2. Find the missing coordinater r.

Answer 1

Answer: r=2

Explanation:

We can use the given 2 points to find slope. Since we are given the slope, we can plug it into the formula and solve for r.

`(y_(2)-y_(1) )/(x_(2)-x_(1) ) =2` [plug in values]

`(12-r)/(-6-(-11)) =2` [combine like terms]

`(12-r)/(5) =2` [multiply both sides by 5]

`12-r=10` [subtract both sides by 12]

`-r=-2` [divide both sides by -1]

`r=2`