Question

I need help with this.Thanks!

Answer 1

Note that when x increases by 1, y increases by 4.  Thus, the slope of the linear function representing this table is 4.  What is the y-intercept?  Note that as y decreases by 4, x decreases by 1.  We have y = 1 and want the y-intercept, (0,y).  Start with y=1 and subtract 4; the result is -3.  So the y-intercept is (0,-3):

y = 4x - 3  (answer)