I will help you with 3.
Step one isolate y: y=(-5x-4)/2
Slope: the slope is the number next to the x (only in linear function), so distribute the 1/2 and you get slope=-5/2
Y-intercept you get when x=0, plug in x=0 in the equation and solve for y to get the y coordinate
2y=-4. y=-2
Answer=(0,-2)
X-intercept is found by making y=0 (so basically do the same as above but for x now)
5x=-4 x=-4/5
Answer=(-0.8,0)
To graph it all you do is plug in an x value, preferably on the equation where we isolated y, but it doesn’t really matter.