Question

7) 5x² - y² +41x-3y + 24 = 0

3x-y=-4
A) (7,0), (6,0)
B) No solution.
C) (1,7), (7,0)
D) (1,7)

Answer 1

D (1, 7)

Explanation:

From equation 2

y = (-4 + y)/3

Plug this value into the first equation which will give an equation involving only y. Solve for y which should give y = 7

Plug this value of y = 7 into 3x -y = -4

=> 3x - 7 = -4

=> 3x = 3

x = 1

So solution is x =1, y = 7 which can be represented as (1, 7)