Question

Determine an equation of the line. Simplify don't factor (HELP please)

X 0 1 2 3 4
Y 3 1 -1 -3 -5

Answer 1

Let us assume that the eqn of the line is
y=mx+c
Nw substitute the values of x and y in it to find m and c.
When u substitute the first values u get

When u substitute the second values u get

Nw substitute the third nd fourth values in the equation
y=-2x+3
and see if the eqn is valid.