SOLUTION: A line with slope −3/4 passes through the point(8, −4). (a) What is y when x = −4? y = (b) What is x when y = −1? x =

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A line with slope −3/4 passes through the point(8, −4). (a) What is y when x = −4? y = (b) What is x when y = −1? x =       Log On


   

Question 366873: A line with slope −3/4 passes through the point(8, −4). (a) What is y when
x = −4?
y =
(b) What is x when
y = −1?
x =

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi, 

Using the general slope=intercept form for an equation of a line:

y = mx + b where m is the slope and b the y-intercept

y = (-3/4)x + b  Using ordered pair(8,-4) to solve for b

-4 = (-3/4)*8 + b

-4 = -6 + b

2 = b

equation of the line is:

y = (-3/4)*x + 2

x = -4 

y = (-3/4)*-4 + 2  = 5



y = (-3/4)*x + 2

y = −1

-1 = (-3/4)*x + 2

-3 = (-3/4)*x 

4 = x