Algebra+1+Third-Quarter+Review+Assignment (1) (1)

Algebra 1 Third-Quarter Review Assignment Each of the problems below are similar to your Algebra 1 9.27.W Practice Exam. You must show your work to receive credit! 1. Write the expression using only positive exponents. Assume no denominator equals zero. ( − 3 x 4 y − 7 ) − 3 1 (−3 x^ 4 y −7 )^ 3 ( -3x^4 y^(-7) )^(-3) ⇩ 2. Factor. x 2 − 2 x − 15 Factor of 15 14 -2 -1+15 -5+3 (x-5)(x+3) 3. Find the axis of symmetry and the vertex of the graph of: y = 2 x 2 − 4 x + 6 (y + 6) = -2x 2 + 4x  (y + 6) = -2(x 2 - 2x)  (y + 6) = -2(x 2 - 2x + 1 - 1)  (y + 6) = -2{(x - 1) 2 - 1}  (y + 6) = -2(x - 1) 2 + 2  -2(x - 1) 2 = (y + 4)  ⇒ (x - 1) 2 = -1/2 (y + 4)  X=1 find the values of a , b , and c.  a =2 b= -4 c=−6  Substitute the values of a and b into the formula d=b/2a  d=−4/2 ⋅ 2  Factor 2 out of 2 ⋅ 2    d=2 ⋅ −2/2(2)