There is a line whose slope is –2 and whose y-intercept is –9 What is its equation in slope-intercept form?

Answer 1

Slope-intercept form of a line's equation is written in y=mx+b where y is the output of the equation when you put a number in for x. m is the value of the slope. And b is the value of the y-intercept. When these values are negative, we include the negative sign when we write out the equation. For example, a line with slope (m) -8 and y-intercept (b) -3 would be described by y=(-8)x + (-3), or, more simply, as y = -8x - 3. To answer your question, its equation would be y = -2x -9.

Answer 2

Recall that slope intercept form is y=mx+b. In this form, m=slope, b=y-intercept.

From the question we know that we have a slope of -2 (or m=-2) and a y-intercept of -9 (or b=-9).

So, we simply plug in what we know.

y=mx+b becomes => y=(-2)x+(-9) or y=-2x-9.

Answer 3

Use slope-intercept form

y = -2x - 9