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What is the y-intercept of the line with the equation below?

Y = 10x - 7

1 Answer

4 votes

Answer:

-7

Explanation:

You want the y-intercept of the equation y = 10x -7.

Y-intercept

The y-intercept is the point where the graph crosses the y-axis. At that point, the value of x is 0.

Substituting x=0 into the equation gives ...

y = 10·0 -7 = 0 -7 = -7

The y-intercept is the point (0, -7), or -7 on the y-axis.

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Additional comment

The form of the given equation is "slope-intercept" form:

y = mx +b

where m is the slope of the line, and b is the y-intercept. Comparing this to y = 10x -7, we see that b = -7. The y-intercept is -7.

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