Question

7.4 need urgent help please!!!

Answer 1

lines are perpendicular

Explanation:

If 2 lines are perpendicular then the product of their slopes = - 1

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

(1)

y =
`(3)/(4)` x - 1 ← is in slope- intercept form

with slope m =
`(3)/(4)`

(2)

3y = - 4x + 6 ( divide each term by 3 )

y = -
`(4)/(3)` x + 2 ← in slope- intercept form

with slope m = -
`(4)/(3)`

Then

`(3)/(4)` × -
`(4)/(3)` = - 1

Thus the 2 lines are perpendicular to each other

Answer 2

Here both line are perpendicular because as product of slope of both lines is -1