Answer:
a) Gradient = -3, b) y-intersect = 15
Step-by-step explanation:
A linear equation is generally written as:
[tex]y=m\cdot x + b[/tex]
where m is the gradient or slope of the function (how steep or shallow) and b is the y-intersect (where x=0)
So rewrite your equation from 3x+y=15 to y=15-3x=-3x+15.
You see that m=-3 and b=15
