Question

Express y in the term of x given that 2 x - 5 y = 7 check weather the (-3,-2) lies on the graph of the given linear equation

Answer 1

2x - 5y = 7

5y = 2 x - 7
y = (2 x - 7 ) / 5

check if (-3, --2) lies on the line: substitute x = -3 in the equation

y = (2 *-3 - 7 )/5 = -13/5 Hence at x = -3, y = -13/5 but not -2. so (-3,-2) is not on the line.