What is the value of the function at x = 2

Two different linear functions are shown below with two points given from each function. use slope-intercept form or point-slope form to find the equation of each. linear function a points: (–5, –2), (–5, 7) linear function b points: (7, –5), (–2, –5) function a has: the equation of line a is: function b has: the equation of line b is:

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?