Question

I. Use the indicated method to solve each other of the pair of simultaneous equations:
(a) x + y = 15 x - y = 3 (substitution)
(b) x + y = 0 x - y = 2 (substitution)
(c) 2x - y = 3 4x + y = 3 (comparison)
(d) 2x - 9y = 9 5x + 2y = 27 (elimination)
(e) x + 4y = -4 3y - 5x = -1 (elimination)
(f) 2x - 3y = 2 x + 2y = 8 (graphing)
(g) x + y = 7 2x - 3y = 9 (comparison)
(h) 11y + 15x = -23 7y - 2x = 20 (Cramer’s rule)
(i) 5x - 6y = 2 6x - 5y = 9 (Cramer’s rule)
(j) (2x/3) + (y/2) = -1 (-x/3) + y = 3 (elimination)

Answer 1

Answer: ftgredwstfgr4yedhuwiqgtfredwktgfryhejtgrfyeik

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