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Big Ideas Math Integrated I, 2016
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Big Ideas Math Integrated I, 2016 View details
5. Graphing Linear Equations in Slope-Intercept Form
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Exercise 23 Page 142

Is the equation in a slope-intercept form?

Error: Misinterpretation of slope-intercept form
Slope: - 1/4
y-intercept: (0,0)

Practice makes perfect

We notice that this equation is solved for x and not y. This means it is not in slope-intercept form. Let's isolate y and then we can identify the slope and y-intercept of the graph.

x=-4y
MultEqn

LHS * (-1)=RHS* (-1)

- x=4y
DivEqn

.LHS /4.=.RHS /4.

- 1/4 x =y
RearrangeEqn

Rearrange equation

y=- 1/4 x

Now, we can see that the slope of the line is - 14. Also since there is no constant, we can tell that the function intercepts the y-axis at the origin when y=0.

Subchapter links expand_more
arrow_right Communicate Your Answer p.135
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arrow_right Monitoring Progress p.136-140
Monitoring Progress 1 (Page 136)
Monitoring Progress 2 (Page 136)
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arrow_right Exercises p.141-144
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