Question 223844: so i have this test tomorrow and i do not understand how to determine what r equals.PLEASE HELP ME!
so the question says determine the value of r so that the line passes through each pair of points has the given slope.
(r,4)(7,1)with m=3/4.
step by step how do i solve this??
Found 2 solutions by rfer, MathTherapy:
Answer by rfer(16322)   (Show Source):
You can put this solution on YOUR website! here goes.
plot (7,1) then use the slope to find the next point
from (7,1) go four to the right and three up to(11,4)
slope=m=3/4
rise over run
Does that help?
Bob
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website! so i have this test tomorrow and i do not understand how to determine what r equals.PLEASE HELP ME!
so the question says determine the value of r so that the line passes through each pair of points has the given slope.
(r,4)(7,1)with m=3/4.
step by step how do i solve this??
The slope of any equation is determined by the slope formula, or m, which =  , where in this case,  . Since it's given that m, or the slope =  , then we'll have:
3(7 - r) = 4(- 3) ------ Cross-multiplying to get rid of denominators
21 - 3r = - 12
- 3r = - 33
r =  , or, r = 
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