WILL GIVE BRAINLIEST y = 2x - 9

y = 1/2x + 3

These two lines are:
parallel
perpendicular
neither

neither

Step-by-step explanation:

Parallel lines have equal slopes

The product of the slopes of perpendicular lines = - 1

The equation of a line in slope- intercept form is

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

y = 2x - 9 ← is in slope- intercept form

with slope m = 2

y = x + 3 ← is in slope- intercept form

with slope m =

2 ≠ , then lines are not parallel

2 × = 1 ≠ - 1, then lines are not perpendicular

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.