Find the x-intercept of the line y = -3x + 7.

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Multiple Choice

Find the x-intercept of the line y = -3x + 7.

Explanation:
The x-intercept is where the line crosses the x-axis, so the y-coordinate is zero. Set y to 0 and solve for x: 0 = -3x + 7. Then -3x = -7, so x = 7/3. The intercept is at (7/3, 0), which is about 2.333. The other values don’t make y zero when plugged into the equation, so they aren’t x-intercepts.

The x-intercept is where the line crosses the x-axis, so the y-coordinate is zero. Set y to 0 and solve for x: 0 = -3x + 7. Then -3x = -7, so x = 7/3. The intercept is at (7/3, 0), which is about 2.333. The other values don’t make y zero when plugged into the equation, so they aren’t x-intercepts.

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