Which statement describes a relationship between these equations? equation 1: y = 3x - 7
equation 2: y = -4x - 7

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)

Which function has the domain x> -11?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)