Question

Can somebody refresh my memory on how to do these? I want to say y=mx+b but i cant remeber which number goes where?

What is the equation of the line that has a slope of -1 and goes through point (0, 5)?

Answer 1

m = slope and b is the y-intercept. to write the equation of a line you first substitute the point and the slope into the equation y = mx+b
so here it is...

5=-1(0) +b
5 = 0 + b
5=b

so your equation is y = -x + 5

Answer 2

Thank you

Answer 3

sure