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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

6. Factoring ax²+ bx + c

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Exercise 53 Page 522

You will need to substitute 0 for x and solve for y.

y-intercept: 1

Practice makes perfect

To determine the y-intercepts of a line, we need to think of the point where the graph of an equation crosses the y-axis. The x-value of that ( x, y) coordinate pair is 0, and the y-value is the y-intercept. To find the y-intercept of the equation, we should substitute 0 for x and solve for y.

-3x+y=1

x= 0

-3( 0)+y=1

Zero Property of Multiplication

y=1

A y-intercept of 1 means that the graph passes through the y-axis at the point (0, 1).

Subchapter links

Lesson Check p.520

Practice and Problem-Solving Exercises p.520-522

Standardized Test Prep p.522

Mixed Review p.522