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What is the equation of the linear function in slope-intercept form described by this table?

What is the equation of the linear function in slope-intercept form described by this-example-1
User Hwcverwe
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1 Answer

3 votes

Answer:

Slope is -2. The equation is y = -2 + 1

Explanation:

We are told this is a linear function. We can take any two points to calculate the Rise/Run, or slope, of the line. I'll use (-2,5) and (2,-3).

The Rise is = (-3 - 5) = -8

The Run is = (2 - (-2)) = 4

The slope is the Rise/Run: (-8/4) = -2

A slope of -2 tells us that y will decrese by 2 for every 1 increase in x.

The equation of the line will be y = -2x + b, where b is the y-intercept (the value of y when x = 0).

Enter any given point into the equation and solve for b. I'll use (0,1):

y = -2x + b

1 = -2(0) + b for (0,1)

b = 1

The equation is thus: y = -2x + 1

User VLAZ
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