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McGraw Hill Integrated II, 2012

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McGraw Hill Integrated II, 2012 View details

9. Perfect Squares

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Exercise 62 Page 71

Find the slope and y-intercept for the given graph. Then, substitute them into slope-intercept form.

y=-2x-4

Practice makes perfect

Let's first use the graph to find the y-intercept. We can count from the origin to the where the line intercepts the y-axis.

Next, we can use count the rise and run between the y-intercept and the next evenly plotted point. This will give us the slope.

Finally, we can substitute the y-intercept, -4, and slope, -2, into the formula for slope-intercept form. y= mx+ b ⇒ y= -2x -4

Subchapter links

Exercises p.68-71