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Find the x- and y- intercept of each linear equation.b) y = 3x + 9

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Answer:

The x and y intercepts for y = 3x + 9 are:

y-intercept: 9

x-intercept: -3

Explanation:

I only see one equation: y = 3x + 9

This is in the slope-intercept format of y=mx + b, where m is the slope and b the y-intercept (the value of y when x = 0).

This means the y-intercept is 9. When x = o, y = 9.

The x-intercept is the point the line crosses the x avis, so y = 0. Use y = 0 in the equation and calculate the value of x:

y=3x+9

0=3x+9

3x= -9

x = -3

See the attached graph.

Find the x- and y- intercept of each linear equation.b) y = 3x + 9-example-1
User Jedwards
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