Which matrix represents the solution to this system of equations?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Triangle abc is reflected over the line y=x triangle abc has points (-6,-,-1) and (-5,-6) what is the c coordinate

Consider the expression below. 9 + 4(x + 2) – 3.1 select the term that best describes "3" in the given expression. o a. coefficient variable exponent constant