Vertex (1,1),point (2,-1)
Can anyone write the equation of the parabola in vertex form?

And employee salary increased by $4500 which represents a 15% raise what is the rate of the increase

What is the y-intercept of the line given by the equation

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3