Question 1202315
equation is y - 4.2 = 3.5 * (x - 2)
add 4.2 to both sides of the equation to get:
y = 3.5 * (x - 2) + 4.2
i think selection C.
that is minus infinity <= x <= plus infinity.
this means any real value of x can be used as input to the function and that the result will be a real value of y for each and every value of x.