If a line with a slope of -2 crosses the y-axis at (0, 3), what is the equation of the line?
slope m = -2,
y = mx + c
y = -2x + c passes through (0, 3)
3 = -2*0 + c
3 = c
c = 3
y = mx + c, y = -2x + 3
From general equation of a line;
y=-2x+c
Replacing for x and y;
3=-2(0)+c
c=3
y=-2x+3