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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 11 Page 321

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

Slope: -3/4
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.

3x+4y=12

LHS-3x=RHS-3x

4y=12-3x

.LHS /4.=.RHS /4.

y=3-3/4x

CommutativePropAdd

Commutative Property of Addition

y=-3/4x+3

Now our equation is in Slope-Intercept Form. Below we have highlighted the slope m and y-intercept b. y= -3/4x+ 3 We can see that the slope is - 34 and the y-intercept is 3.