Question

line c passes through the origin and has a slope of -7.Write an equation like y=mx+b.If theres enough information if not explain what you need

Answer 1

Passes through origin means yint is 0
slope is -7

y=mx+b
m=slope
b=yint

yint=0
slope=-7

y=-7x+0
y=-7x is the equation

Answer 2

If you have a picture that shows line c on a graph, you could find your y-intercept or b. If not, you need the y-intercept to make an equation.