Does the following graph display a function

NO because it fails the vertical line test.

Step-by-step explanation:

When you do the VLT, it should only touch the figure once but if you the VLT it touches the figure twice.

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°

y = i/2 xtnop + (3i/2 tnop+ 1)

step-by-step explanation:

the picture is the step by step explanation.