- Three people examine the system of linear equations shown.
y=- 2 x - 4
y=- 2 x +4
Jeremy says there is exactly one solution. Wanda says there is no solution. Barry says
there are infinitely many solutions.
Which student is correct? Explain how you know.

there are no solutions as the two straight lines represented by the two equations are parallel, so they have no point in common

Step-by-step explanation:

general equation of a straight line: ax + by + c = 0

the slope (or raise) of a straight line m is equal to -a/b (b=1 a=-2 in this exercise as the equation is 1y=-2x - 4)

so m1 = -2/1 = -1/2

and m2 = -2/1 = -1/2

there is also a geometrical explanation, but I am not sure if it could be too complex