Question

Give the slope-intercept form of the equation of the line that is perpendicular to –7x – 8y = 12 and contains P(–3, 1)

Answer 1

∵the line is ⊥ to -7x -8y =12
∴its slope = -(-7/-8)= -7/8
∵it passes through P
∴(y-1)=(-7/8)(x+3)
y-1 = (-7/8)x - 21/8
y = (-7/8)x -13/8