Question

Umm I need explanation for -9x+8=y

Answer 1

The given equation is -9x + 8 = y

There are two variables x and y

The highest degree of the each variable is 1, so it is the linear equation with two variable.

Consider some value for x and then solve it for y;

Let x = 1

-9x + 8 = y

-9(1) +8 = y

-9 + 8 = y

y = -1

(1,-1)

Let x = 0

-9x + 8 = y

-9(0) + 8 = y

y = 8

(0,8)

Let x = (-1)

-9x + 8 = y

-9(-1) + 8 = y

9 + 8 = y

y = 17

(-1, 17)

Plot these coordinates on the graph