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if the lower pointvis 56 the dot line will be 55.5

  -55.5

Step-by-step explanation:

There are 4 spaces between -56 and -54 (2 units), so each space represents 2/4 = 1/2 = 0.5 unit. The markings increase as you go upward, so the value at the dot, 1 space above -56, is ...

  -56 +0.5 = -55.5

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2