Question

Which equation below is not an equation that represents the graph shown below?
y - 1 = 4(x - 2)

y = 4x - 7

4x - y = 7

y - 2 = 4(x - 1)

Answer 1

I would express all the lines in the form

y = mx + b

in options 1, 3, 4 you need to make y the subject.

so for the 1st and last line you need to expand and collect

then the solution should be obvious