Question

A curve has equation y= 2 + x - x^2. Find coordinates of 3 unknown points on the line. 1st point is at negative x, y value. 2nd point is at x=0 and y is positive. 3rd value is at y=o and x is positive.

Answer 1

y(-x) = 2 + (-x) - (-x)^2 = 2-x-x^2
(0,2)
(2,0)

Answer 2

If my digit in my tens column is7 more than 2, and the digit in my Inés column 9 less than 10. What number am I?