(PLEASE ANSWER<3) Determine if the given equations are functions or not functions x = 3, x2(squared) + y2(squared) =81, y = -x + 11, y2(squared) -5x - 12, y = 2x2(squared) - 6x + 4, y = -7

f(x) = 2x^2 - 6x + 4 is a quadratic function

1 1/7 hope i

step-by-step explanation:

8/7 = (1 * 7 + 1) / 7 = 1 + 1/7 = 1 1/7

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system