SOLUTION: Using the given equation find the missing coordinates of the points and then find the slope of the line for each equation 7x−5y=12; A(...; 9), B(4; ...)

Algebra ->  Linear-equations -> SOLUTION: Using the given equation find the missing coordinates of the points and then find the slope of the line for each equation 7x−5y=12; A(...; 9), B(4; ...)      Log On


   

Question 1136562: Using the given equation find the missing coordinates of the points and then find the slope of the line for each equation
7x−5y=12; A(...; 9), B(4; ...)
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
7x-5y=12
if A(...; 9), =>y=9
7x-5%2A9=12...solve for x
7x-45=12
7x=12%2B45
7x=57
x=57%2F7
x=81%2F7=>A(81%2F7; 9) or A(8.14; 9)


if B(4; ...)=>x=4
7%2A4-5y=12
28-5y=12
28-12=5y
5y=16
y=16%2F5
y=31%2F5=>B(4; 31%2F5) or B(4; 3.2)

slope:

7x-5y=12.....solve for y

7x-12=5y
7x%2F5-12%2F5=y
y=highlight%28%287%2F5%29%29x%E2%88%922.4=> slope is highlight%28%287%2F5%29%29