Question

Write that down the equation for the lines that is the graphs are depicted below

PLZ HELP 20 points

Answer 1

• y = 2x

Explanation:

The line passes through the origin and holds the point A(1, 2).

This is a proportional relationship:

• y = kx

Considering the coordinates of the point A:

• 2 = 1*k ⇒ k = 2

The line is:

• y = 2x

Answer 2

• A(1,2)

Find slope of line (m)

`\\ \sf\longmapsto m=(2-0)/(1-0)`

`\\ \sf\longmapsto m=2`

Putting in y=mx+b

`\\ \sf\longmapsto y=mx+b`

`\\ \sf\longmapsto 2=2(1)+b`

`\\ \sf\longmapsto 2=2+b`

`\\ \sf\longmapsto b=2-2=0`

Equation of the line

`\\ \sf\longmapsto y=2x`