Question

4. 4x - y = 5
8x - 5y = 1​

Answer 1

(2,3)

Explanation:

4x - y = 5

4x - 5 = y

8x - 5y = 1

8x - 5(4x - 5) = 1

8x - 20x + 25 = 1

8x - 20x = 1 - 25

-12x = - 24

x = -24/-12

x = 2

y = 4x - 5

y = 4(2) - 5

y = 8 - 5

y = 3

check...

4x - y = 5

4(2) - 3 = 5

8 - 3 = 5

5 = 5 (correct)...so it checks out

solution is : x = 2 and y = 3...or (2,3)

Answer 2

4x - y = 5 slope=4 y=-5

8x - 5y = 1​ slope= 8/5 y= - 1/5

Explanation: