\text { 1. (a) Solve } x^{2}-4=0 \text { by factoring }

(How many points did you need to get the general shape of the curve? Label at least two points) (c) Review your solutions to parts (a). Where do you see these solutions on the graph? Explain why. (b) Sketch a graph of the equation y = x² − 4 by making a T-chart for x and y and plotting the points on thecoordinate plane below.