Question

How many solutions does this linear system have ? y=5x-1 -15x-3y=3

Answer 1

the answer is A if its for e2020 or the option for

one solution: (0,-1)

Explanation:

Answer 2

y = 5x - 1
-15x - 3y = 3

-15x - 3y = 3
-15x - 3(5x - 1) = 3
-15x - 3(5x) + 3(1) = 3
-15x - 15x + 3 = 3
-30x + 3 = 3
- 3 - 3
-30x = 0
-30 -30
x = 0

y = 5x - 1
y = 5(0) - 1
y = 0 - 1
y = -1
(x, y) = (0, -1)

This linear system has one solution.