# Beginners Algebra

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For each table, find the output value that corresponds to an input value of 0.

Chart;

Input Output;
-5 (negative) 22 (positive)
-2 (negative) 10 (positive)
1 (positive) -2 (negative)
4 (positive) -14 (negative)
7 (positive) -26 (negative)

• Beginners Algebra -

I am going to guess it looks like a straight line.

y = m x + b

to find the slope m

m = (Y2-Y1)/(X2-X1) for any to points if it really is a line.
take the last two points

m = (-26 + 14) / (7-4) = -12/3 = -4
put in a point to get b
y = -4x + b
22 = -4(-5) + b
b = 2
so if it is a straight line then
y = -4x + 2
check that in the other points to make sure they all lie on the line
then for x = 0
y = 2

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