Find then equation line through (5, 7) parallel to the li...
Find then equation line through (5, 7) parallel to the line 7x + 5y = 12
5x + 7y = 120
7x + 5y = 70
x + y = 7
15x + 17y = 90
Correct answer is B
Equation (5, 7) parallel to the line 7x + 5y = 12
5Y = -7x + 12
y = −7x5 + 125
Gradient = −75
∴ Required equation = y−7x−5 = −75 i.e. 5y - 35 = -7x + 35
5y + 7x = 70