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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

Mid-Chapter Quiz

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Exercise 12 Page 321

What do m and b represent in the Slope-Intercept Form?

Slope: -4/3
y-intercept: -3

Practice makes perfect

Let's recall the Slope-Intercept Form of a line, 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.

6y=-8x-18

.LHS /6.=.RHS /6.

y=-8/6x-3

a/b=.a /2./.b /2.

y=-4/3x-3

a-b = a+(- b)

y=-4/3x+(-3)

Now our equation is in Slope-Intercept Form. Below we have highlighted the slope m and y-intercept b. y= -4/3x+( -3) We can see that the slope is - 43 and the y-intercept is -3.