Question

Mathhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Answer 1

Both 
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Answer 2

Let's first try the coordinates (2,1). 4x - 7 should be equal to 1 by replacing x by 2
4x - 7 = 4*2 - 7 = 8 - 7 = 1
So 4x - 7 = y = 1 when x = 2

Let's replace by the coordinates (4,9). 4x - 7 should be equal to 9 when x = 4.
4x - 7 = 4*4 - 7 = 16 - 7 = 9
So 4x - 7 = y = 9 when x = 4

Both coordinates verifies the equation, so both ordered pairs are solution of the equation.

I've added a picture of the graph of the equation with 2 points of both coordinates.

Hope this Helps! :)