Which could be the function graphed below?

On a coordinate plane, a curve opens down and to the right in quadrants 1 and 4. The curve starts on the y-axis in quadrant 4 and goes through the x-axis into quadrant 1.
f (x) = StartRoot x EndRoot minus 2
f (x) = StartRoot x minus 3 EndRoot + 1
f (x) = StartRoot 2x + 4 EndRoot
f (x) = StartRoot x + 1 EndRoot + 8

The system of equations graphed below has how many solutions? y = 2x + 2

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field