Can you please help me with my questions?

I am currently learning about the y-intercept and a slope, but I don't understand it yet.Can someone help me with my homework?
pg.483 #51-58

51. y= -2x + 4
52. y= 1/2+x - 3
54. 8x + 5y = 400
in 55- 58 it says: graph the line satisfying the given condition.
Can someone also you help me with the meaning and teach me how to do this?
55. passes through (0,4) with a slope of 4)
56. passes through (-2,4) with a slope of -3/4
57. slope 0 and y-intercept 3
58. slope 2 and y- intercept -4

Can you please help me with my questions?

Hello

For any line of the form

y=mx+c

the slope is m
y intercept is c

example
y= -2x + 4

slope m =-2 and y intercept c is 4
similarly do others

for finding if the line pass through given points just put those values of (x,y) and see it both left and right side are equal or not

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