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McGraw Hill Glencoe Algebra 2, 2012 View details

3. Rate of Change and Slope

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Exercise 26 Page 80

The slope of a line is the same as its rate of change.

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Practice makes perfect

Equations in slope-intercept form follow a specific format, where m represents the slope of the line and b is the y-intercept. y=mx+bLet's rewrite our equation a little bit so that it more closely resembles this format. This will make it easier to identify the features of the equation.

20x+85y=120

SubEqn

LHS-20x=RHS-20x

85y=- 20x+120

▼

.LHS /85.=.RHS /85.

DivEqn

.LHS /85.=.RHS /85.

y=- 20x+120/85

WriteSumFrac

Write as a sum of fractions

y=- 20x/85+120/85