Question

Find the value or r so the line that passes through the pair of points below has the given slope.

(5 , r), (4 , 9), m = 1

r =

Answer 1

use the formula for the slope m=\[\frac{ y _{2}-y_1 }{x_2-x_1 ? }\]
where y2, y1 and x2,x1 are x and y coordinates from the points given

Answer 2

insert values in the formula
1=(r-9)/(5-4)
solve for r and you'll get r=1