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the graph shows two lines, m and n.

a coordinate plane is shown with two lines graphs. line m has a slope of 1 and passes through the y axis at negative 2. line n has a slope of 1 and passes through the y axis at negative 2.

how many solutions are there for the pair of equations for lines m and n? explain your answer.

i don't understand ; -;

Sloope intercept form is
y=mx+b
m=slope
b=y intercept =where the line passes through the y axis

we are given
line M has slope of 1 and passes through y axis at -2 (y intercept=-2)
equaton is therefor y=1x-2 or y=x-2

line N has slope of 1 and passes through y axis at -2 (y intercept=-2)
equaton is therefor y=1x-2 or y=x-2

compare

line M: y=x-2
line N: y=x-2

they are the same line and lines extend infinitely so therefor there are infinite number of solutions