Question

EXPLAIN YOUR ANSWER

7.
Two equations are given below:

a – 3b = 4
a = b – 2

What is the solution to the set of equations in the form (a, b)? (5 points)



(–2, –2)
(–3, –1)
(–9, –7)
(–5, –3)

Answer 1

D. (-5, -3)

Explanation:

Solve the equation by substitution method to get b - 2 - 3b = 4. Then you substitute b into simplest to get, b= -3. Repeat the same process with a to get, a = -5. So your answer would be (-5, -3)

Good luck!!

Answer 2

Solve the equation by substitution method.
To get b-2-3b=4. Then you substitute b into simplest to get, b=-3. Repeat the same process with a to get, a=-5. So your answer would be (-5, -3)