Question

A line has a y-intercept of 5 and passes through the point (4,-2). Which of the following is an equation of the line?

Answer 1

Explanation:

To write an equation given the y-intercept and a point, we can use the formula y=mx+b, aka slope intercept form.

M is the slope, so first substitute the point values of (4,-2) to solve for m.

y= mx + b

-2 = 4m + 5

4m = -7

m= -7/4

Now plug in the y intercept and the slope to get the equation.

y= -7/4x + 5

Hope this helps!