Find the equation of the line through the points (5, 7) p...
Find the equation of the line through the points (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 through (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
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