Hello Abigail. In order to answer this question, you must know the slope-intercept formula. The slope-intercept formula is y=mx+b, where b is the y-intercept and m is the slope. We know that m=3 and b=-2 because these values are mentioned in the problem. Now, we can simply plug these values into the formula:
y=mx+b
y=3x + (-2)
(a negative sign multiplied by a positive sign is a negative sign)
The equation then becomes:
y=3x-2
To finally answer your question, the slope-intercept form or linear equation for a line whose slope is 3 and y-intercept is -2 is: y=3x-2
If you have any questions, feel free to send me a message through wyzant. If you want to schedule a lesson with me, please do not hesitate to send me a message through wyzant.
