All of the equations are in slope intercept form (y=mx+b); m is the slope, b is the y intercept
let's start with the first equation: y=-3x+4. It's shown that the slope is -3 and the y intercept is 4, so it's m=-3, b=4
second equation: y=-1.5x-4. Shown that m=-1.5, b=-4
third equation: y=1.5x-7. Shown that m=1.5, b=7
fourth equation: y=3x. It's shown that m=3, but no b is shown. However, the y intercept isn't "none" , it's 0. (y=3x+0). So, the fourth one will be m=3, b=0
the fifth equation: y=7 there is no slope given (no x), so the slope is 0 (not "none"). That just leaves the y intercept which is 7. The fifth one is m=0, b=7
Hope this helps!
